diff --git a/README.md b/README.md
index aff57eb9..394e7c35 100644
--- a/README.md
+++ b/README.md
@@ -241,3 +241,4 @@ encrypted.
 
 Note that historical encrypted messages cannot currently be decoded - history
 is therefore lost when the page is reloaded.
+
diff --git a/package.json b/package.json
index 7f1e8d92..70adfcc4 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "build:css": "catw \"src/skins/vector/css/**/*.css\" -o vector/components.css --no-watch",
     "build:compile": "babel --source-maps -d lib src",
     "build:bundle": "NODE_ENV=production webpack -p lib/vector/index.js vector/bundle.js",
-    "build:bundle:dev": "NODE_ENV=production webpack --optimize-occurence-order lib/vector/index.js vector/bundle.js",
+    "build:bundle:dev": "webpack --optimize-occurence-order lib/vector/index.js vector/bundle.js",
     "build:staticfiles": "cpx -v node_modules/olm/olm.js vector/",
     "build": "npm run build:staticfiles && npm run build:emojione && npm run build:css && npm run build:compile && npm run build:bundle",
     "build:dev": "npm run build:staticfiles && npm run build:emojione && npm run build:css && npm run build:compile && npm run build:bundle:dev",
@@ -47,8 +47,8 @@
     "gfm.css": "^1.1.1",
     "highlight.js": "^9.0.0",
     "linkifyjs": "2.0.0-beta.4",
-    "matrix-js-sdk": "0.5.6",
-    "matrix-react-sdk": "0.6.5",
+    "matrix-js-sdk": "matrix-org/matrix-js-sdk#develop",
+    "matrix-react-sdk": "matrix-org/matrix-react-sdk#develop",
     "modernizr": "^3.1.0",
     "q": "^1.4.1",
     "react": "^15.2.1",
diff --git a/src/components/structures/RoomSubList.js b/src/components/structures/RoomSubList.js
index 45e47131..63b34056 100644
--- a/src/components/structures/RoomSubList.js
+++ b/src/components/structures/RoomSubList.js
@@ -17,15 +17,20 @@ limitations under the License.
 'use strict';
 
 var React = require('react');
+var ReactDOM = require('react-dom');
+var classNames = require('classnames');
 var DropTarget = require('react-dnd').DropTarget;
 var sdk = require('matrix-react-sdk')
 var dis = require('matrix-react-sdk/lib/dispatcher');
 var Unread = require('matrix-react-sdk/lib/Unread');
 var MatrixClientPeg = require('matrix-react-sdk/lib/MatrixClientPeg');
+var RoomNotifs = require('matrix-react-sdk/lib/RoomNotifs');
 
 // turn this on for drop & drag console debugging galore
 var debug = false;
 
+const TRUNCATE_AT = 10;
+
 var roomListTarget = {
     canDrop: function() {
         return true;
@@ -80,7 +85,8 @@ var RoomSubList = React.createClass({
     getInitialState: function() {
         return {
             hidden: this.props.startAsHidden || false,
-            truncateAt: 20,
+            capTruncate: this.props.list.length > TRUNCATE_AT,
+            truncateAt: this.props.list.length > TRUNCATE_AT ? TRUNCATE_AT : -1,
             sortedList: [],
         };
     },
@@ -109,17 +115,62 @@ var RoomSubList = React.createClass({
         });
     },
 
-    onClick: function(ev) {
-        var isHidden = !this.state.hidden;
-        this.setState({ hidden : isHidden });
-
-        if (isHidden) {
-            // as good a way as any to reset the truncate state
-            this.setState({ truncateAt : 20 });
-            this.props.onShowMoreRooms();
+    // The header is collapsable if it is hidden or not stuck
+    // The dataset elements are added in the RoomList _initAndPositionStickyHeaders method
+    isCollapsableOnClick: function() {
+        var stuck = this.refs.header.dataset.stuck;
+        if (this.state.hidden || stuck === undefined || stuck === "none") {
+            return true;
+        } else {
+            return false;
         }
+    },
 
-        this.props.onHeaderClick(isHidden);
+    onClick: function(ev) {
+        if (this.isCollapsableOnClick()) {
+            // The header iscCollapsable, so the click is to be interpreted as collapse and truncation logic
+            var isHidden = false;
+            var isTruncatable = this.props.list.length > TRUNCATE_AT;
+
+            if (this.state.hidden && (this.state.capTruncate && isTruncatable)) {
+                isHidden = false;
+                this.setState({
+                    hidden : isHidden,
+                    capTruncate : true,
+                    truncateAt : TRUNCATE_AT
+                });
+            } else if ((!this.state.hidden && this.state.capTruncate)
+                        || (this.state.hidden && (this.state.capTruncate && !isTruncatable)))
+            {
+                isHidden = false;
+                this.setState({
+                    hidden : isHidden,
+                    capTruncate : false,
+                    truncateAt : -1
+                });
+            } else if (!this.state.hidden && !this.state.capTruncate) {
+                isHidden = true;
+                this.setState({
+                    hidden : isHidden,
+                    capTruncate : true,
+                    truncateAt : TRUNCATE_AT
+                });
+            } else {
+                // Catch any weird states the system gets into
+                isHidden = false;
+                this.setState({
+                    hidden : isHidden,
+                    capTruncate : true,
+                    truncateAt : TRUNCATE_AT
+                });
+            }
+
+            this.props.onShowMoreRooms();
+            this.props.onHeaderClick(isHidden);
+        } else {
+            // The header is stuck, so the click is to be interpreted as a scroll to the header
+            this.props.onHeaderClick(this.state.hidden, this.refs.header.dataset.originalPosition);
+        }
     },
 
     tsOfNewestEvent: function(room) {
@@ -186,6 +237,44 @@ var RoomSubList = React.createClass({
         this.setState({ sortedList: list.sort(comparator) });
     },
 
+    _shouldShowNotifBadge: function(roomNotifState) {
+        const showBadgeInStates = [RoomNotifs.ALL_MESSAGES, RoomNotifs.ALL_MESSAGES_LOUD];
+        return showBadgeInStates.indexOf(roomNotifState) > -1;
+    },
+
+    _shouldShowMentionBadge: function(roomNotifState) {
+        return roomNotifState != RoomNotifs.MUTE;
+    },
+
+    roomNotificationCount: function() {
+        var self = this;
+
+        return this.props.list.reduce(function(result, room) {
+            var roomNotifState = RoomNotifs.getRoomNotifsState(room.roomId);
+            var highlight = room.getUnreadNotificationCount('highlight') > 0 || self.props.label === 'Invites';
+            var notificationCount = room.getUnreadNotificationCount();
+
+            const notifBadges = notificationCount > 0 && self._shouldShowNotifBadge(roomNotifState);
+            const mentionBadges = highlight && self._shouldShowMentionBadge(roomNotifState);
+            const badges = notifBadges || mentionBadges;
+
+            if (badges) {
+                result[0] += notificationCount;
+                if (highlight) {
+                    result[1] = true;
+                }
+            }
+            return result;
+        }, [0, false]);
+    },
+
+    _updateSubListCount: function() {
+        // Force an update by setting the state to the current state
+        // Doing it this way rather than using forceUpdate(), so that the shouldComponentUpdate()
+        // method is honoured
+        this.setState(this.state);
+    },
+
     moveRoomTile: function(room, atIndex) {
         if (debug) console.log("moveRoomTile: id " + room.roomId + ", atIndex " + atIndex);
         //console.log("moveRoomTile before: " + JSON.stringify(this.state.rooms));
@@ -293,6 +382,7 @@ var RoomSubList = React.createClass({
                     unread={ Unread.doesRoomHaveUnreadMessages(room) }
                     highlight={ room.getUnreadNotificationCount('highlight') > 0 || self.props.label === 'Invites' }
                     isInvite={ self.props.label === 'Invites' }
+                    refreshSubList={ self._updateSubListCount }
                     incomingCall={ self.props.incomingCall && (self.props.incomingCall.roomId === room.roomId) ? self.props.incomingCall : null } />
             );
         });
@@ -300,35 +390,47 @@ var RoomSubList = React.createClass({
 
     _getHeaderJsx: function() {
         var TintableSvg = sdk.getComponent("elements.TintableSvg");
-        return (
-            <h2 onClick={ this.onClick } className="mx_RoomSubList_label">
-                { this.props.collapsed ? '' : this.props.label }
-                <img className="mx_RoomSubList_chevron"
-                    src={ this.state.hidden ? "img/list-close.svg" : "img/list-open.svg" }
-                    width="10" height="10" />
-            </h2>
-        );
-    },
 
-    _createOverflowTile: function(overflowCount, totalCount) {
-        var BaseAvatar = sdk.getComponent('avatars.BaseAvatar');
-        // XXX: this is duplicated from RoomTile - factor it out
+        var subListNotifications = this.roomNotificationCount();
+        var subListNotifCount = subListNotifications[0];
+        var subListNotifHighlight = subListNotifications[1];
+
+        var roomCount = this.props.list.length > 0 ? this.props.list.length : '';
+        var isTruncatable = this.props.list.length > TRUNCATE_AT;
+        if (!this.state.hidden && this.state.capTruncate && isTruncatable) {
+            roomCount = TRUNCATE_AT + " of " + roomCount;
+        }
+
+        var chevronClasses = classNames({
+            'mx_RoomSubList_chevron': true,
+            'mx_RoomSubList_chevronUp': this.state.hidden,
+            'mx_RoomSubList_chevronRight': !this.state.hidden && this.state.capTruncate,
+            'mx_RoomSubList_chevronDown': !this.state.hidden && !this.state.capTruncate,
+        });
+
+        var badgeClasses = classNames({
+            'mx_RoomSubList_badge': true,
+            'mx_RoomSubList_badgeHighlight': subListNotifHighlight,
+        });
+
+        var badge;
+        if (subListNotifCount > 0) {
+            badge = <div className={badgeClasses}>{subListNotifCount > 99 ? "99+" : subListNotifCount}</div>;
+        }
+
         return (
-            <div className="mx_RoomTile mx_RoomTile_ellipsis" onClick={this._showFullMemberList}>
-                <div className="mx_RoomTile_avatar">
-                    <BaseAvatar url="img/ellipsis.svg" name="..." width={24} height={24} />
+            <div className="mx_RoomSubList_labelContainer" ref="header">
+                <div onClick={ this.onClick } className="mx_RoomSubList_label">
+                    { this.props.collapsed ? '' : this.props.label }
+                    <div className="mx_RoomSubList_roomCount">{roomCount}</div>
+                    <div className={chevronClasses}></div>
+                    {badge}
                 </div>
-                <div className="mx_RoomTile_name">and { overflowCount } others...</div>
             </div>
         );
     },
 
-    _showFullMemberList: function() {
-        this.setState({
-            truncateAt: -1
-        });
-        this.props.onShowMoreRooms();
-    },
+    _createOverflowTile: function() {}, // NOP
 
     // Fix any undefined order elements of a room in a manual ordered list
     //     room.tag[tagname].order
diff --git a/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css b/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css
index d9e4e05f..0b536259 100644
--- a/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css
+++ b/src/skins/vector/css/matrix-react-sdk/structures/SearchBox.css
@@ -20,7 +20,6 @@ limitations under the License.
     margin-right: 16px;
     padding-top: 24px;
     padding-bottom: 22px;
-    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
 
     display: flex;
     display: -webkit-flex;
diff --git a/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomList.css b/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomList.css
index a2241853..4dcda646 100644
--- a/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomList.css
+++ b/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomList.css
@@ -15,7 +15,6 @@ limitations under the License.
 */
 
 .mx_RoomList {
-    padding-top: 8px;
     padding-bottom: 12px;
     min-height: 400px;
 }
@@ -33,3 +32,8 @@ limitations under the License.
     overflow-x: hidden ! important;
     overflow-y: scroll ! important;
 }
+
+/* Make sure the scrollbar is above the sticky headers from RoomList */
+.mx_RoomList_scrollbar .gm-scrollbar.-vertical {
+    z-index: 5;
+}
diff --git a/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomTile.css b/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomTile.css
index c266b027..25456503 100644
--- a/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomTile.css
+++ b/src/skins/vector/css/matrix-react-sdk/views/rooms/RoomTile.css
@@ -109,9 +109,8 @@ limitations under the License.
 }
 
 .collapsed .mx_RoomTile_badge {
-    top: -2px;
+    top: 0px;
     min-width: 12px;
-    height: 16px;
     border-radius: 16px;
     padding: 0px 4px 0px 4px;
     z-index: 200;
@@ -129,22 +128,22 @@ limitations under the License.
     display: block;
     width: 0;
     height: 0;
-    margin-left: 6px;
-    border-top: 8px solid #ff0064;
-    border-right: 10px solid transparent;
+    margin-left: 5px;
+    border-top: 5px solid #ff0064;
+    border-right: 7px solid transparent;
 }
 
 .mx_RoomTile_badge {
     display: inline-block;
-    min-width: 19px;
-    height: 17px;
+    min-width: 15px;
+    height: 15px;
     position: absolute;
     right: 8px; /*gutter */
     top: 9px;
-    border-radius: 14px;
+    border-radius: 8px;
     color: #fff;
     font-weight: 600;
-    font-size: 11px;
+    font-size: 10px;
     text-align: center;
     padding-top: 1px;
     padding-left: 4px;
@@ -175,7 +174,7 @@ limitations under the License.
 }
 
 .mx_RoomTile_selected {
-    background-color: rgba(118,207,166,0.2);
+    background-color: rgba(255, 255, 255, 0.8);
 }
 
 .mx_RoomTile .mx_RoomTile_name.mx_RoomTile_badgeShown {
@@ -187,5 +186,3 @@ limitations under the License.
     right: 0px;
 }
 
-.mx_RoomTile:hover {
-}
diff --git a/src/skins/vector/css/vector-web/structures/LeftPanel.css b/src/skins/vector/css/vector-web/structures/LeftPanel.css
index 316246cb..fb023ffe 100644
--- a/src/skins/vector/css/vector-web/structures/LeftPanel.css
+++ b/src/skins/vector/css/vector-web/structures/LeftPanel.css
@@ -49,6 +49,7 @@ limitations under the License.
     flex: 1 1 0;
 
     overflow-y: auto;
+    z-index: 5;
 }
 
 .mx_LeftPanel.collapsed .mx_BottomLeftMenu {
@@ -62,7 +63,7 @@ limitations under the License.
     -webkit-order: 3;
     order: 3;
 
-    border-top: 1px solid rgba(0, 0, 0, 0.1);
+    border-top: 1px solid rgba(118, 207, 166, 0.2);
     margin-left: 16px; /* gutter */
     margin-right: 16px; /* gutter */
     -webkit-flex: 0 0 60px;
diff --git a/src/skins/vector/css/vector-web/structures/RoomSubList.css b/src/skins/vector/css/vector-web/structures/RoomSubList.css
index b54fea98..4d9b0668 100644
--- a/src/skins/vector/css/vector-web/structures/RoomSubList.css
+++ b/src/skins/vector/css/vector-web/structures/RoomSubList.css
@@ -20,23 +20,128 @@ limitations under the License.
     width: 100%;
 }
 
+.mx_RoomSubList_labelContainer {
+    height: 31px; /* mx_RoomSubList_label height including border */
+    width: 235px; /* LHS Panel width */
+    position: relative;
+}
+
 .mx_RoomSubList_label {
+    position: relative;
     text-transform: uppercase;
     color: #3d3b39;
     font-weight: 600;
-    font-size: 13px;
+    font-size: 12px;
+    width: 203px; /* padding + width = LHS Panel width */
+    height: 17px; /* padding + height = 29px, same as mx_RoomSubList_stickyContainer */
     padding-left: 16px; /* gutter */
     padding-right: 16px; /* gutter */
-    margin-top: 8px;
-    margin-bottom: 4px;
+    padding-top: 6px;
+    padding-bottom: 6px;
     cursor: pointer;
+    background-color: rgba(118, 207, 166, 0.2);
+    border-top: solid 2px #eaf5f0;
+}
+
+.mx_RoomSubList_label.mx_RoomSubList_fixed {
+    position: fixed;
+    top: 0;
+    z-index: 4;
+    /* pointer-events: none; */
+}
+
+.collapsed .mx_RoomSubList_label {
+    height: 17px;
+    width: 28px; /* collapsed LHS Panel width */
+}
+
+.collapsed .mx_RoomSubList_labelContainer {
+    width: 28px; /* collapsed LHS Panel width */
+}
+
+.mx_RoomSubList_roomCount {
+    display: inline-block;
+    font-size: 12px;
+    font-weight: normal;
+    color: #76cfa6;
+    padding-left: 5px;
+    text-transform: none;
+}
+
+.collapsed .mx_RoomSubList_roomCount {
+    display: none;
+}
+
+.mx_RoomSubList_badge {
+    display: inline-block;
+    min-width: 15px;
+    height: 15px;
+    position: absolute;
+    right: 8px; /*gutter */
+    top: 7px;
+    border-radius: 8px;
+    color: #fff;
+    font-weight: 600;
+    font-size: 10px;
+    text-align: center;
+    padding-top: 1px;
+    padding-left: 4px;
+    padding-right: 4px;
+    background-color: #76cfa6;
+}
+
+.collapsed .mx_RoomSubList_badge {
+    display: none;
+}
+
+.mx_RoomSubList_badgeHighlight {
+    background-color: #ff0064;
+}
+
+/* This is the bottom of the speech bubble */
+.mx_RoomSubList_badgeHighlight:after {
+    content: "";
+    position: absolute;
+    display: block;
+    width: 0;
+    height: 0;
+    margin-left: 5px;
+    border-top: 5px solid #ff0064;
+    border-right: 7px solid transparent;
+}
+
+/* Hide the bottom of speech bubble */
+.collapsed .mx_RoomSubList_badgeHighlight:after {
+    display: none;
 }
 
 .mx_RoomSubList_chevron {
-    padding-left: 4px;
     pointer-events: none;
+    position: absolute;
+    right: 41px;
+    top: 11px;
 }
 
-.collapsed .mx_RoomSubList_chevron  {
-    padding-left: 12px;
+.mx_RoomSubList_chevronDown {
+    width: 0;
+    height: 0;
+    border-left: 5px solid transparent;
+    border-right: 5px solid transparent;
+    border-top: 6px solid #76cfa6;
+}
+
+.mx_RoomSubList_chevronUp {
+    width: 0;
+    height: 0;
+    border-left: 5px solid transparent;
+    border-right: 5px solid transparent;
+    border-bottom: 6px solid #76cfa6;
+}
+
+.mx_RoomSubList_chevronRight {
+    width: 0;
+    height: 0;
+    border-top: 5px solid transparent;
+    border-left: 6px solid #76cfa6;
+    border-bottom: 5px solid transparent;
 }