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@@ -7,14 +7,38 @@ The "UNDER DEVELOPMENT" section of the Mattermost changelog appears in the produ
 - **Release candidate anticipated:** 2015-12-10
 - **Final release anticipated:** 2015-12-16
 
+### New Features
+
+Authentication
+- Documented unofficial GitHub SSO support using GitLab UI
+
+Archives
+- Added permalink feature that lets users link to a post in the message archives
+- Added ability to "Jump" to archives from a search result
+
+Account Settings
+- Added "Preview pre-release features" setting, to allow user to preview early features ahead of their official release
+- Added "Display font" setting, so users can select which font to use
+
+Messaging & Comments
+- Added in-line previews for links from select websites and for URLs pointing to an image (enabled via Account Settings -> Advanced -> Preview pre-release features)
+- Added emoji autocomplete
+
+Extras
+- Added `/loadtest url` tool for manually [testing text processing](https://github.com/mattermost/platform/tree/master/doc/developer/tests)
+
 ### Improvements 
 
 Performance
 - Updated getProfiles service to return less data
+- Refactored several modals to use React-Boostrap
+- Refactored the center channel
 
 Messaging & Comments
-- Added in-line previews for links from select websites and for URLs pointing to an image
-- Added a "Help" link for messaging
+- Added "Help" link for messaging
+- Removed the @all mention 
+- Added Markdown support for task lists
+- Added ability to preview a Markdown message before sending (enabled via Account Settings -> Advanced -> Preview pre-release features)
 
 Onboarding
 - Added various small improvements to the tutorial
@@ -22,6 +46,9 @@ Onboarding
 User Interface
 - Visually combined sequential messages from the same user 
 - Added ability to rename "Town Square"
+- Teammate name display option now applies to messages and comments
+- Menus and search improved on mobile UI
+- Switched to Emoji One style emojis
 
 #### Bug Fixes  
 
@@ -29,14 +56,45 @@ User Interface
 - Fixed bug where the channel sidebar didn't order correctly on Postgres databases
 - Fixed bug where search results did not highlight when searching with quotation marks, wildcard, or in: and from: modifiers
 - Fixed bug with the cancel button not properly resetting the text in some account settings fields
-- Fixed a bug where editing a post to be empty caused a 404 error
+- Fixed bug where editing a post to be empty caused a 404 error
+- Fixed bug where logging out did not work properly on IE11
 - Fixed issue where refreshing the page with the right hand sidebar open caused "..." to show up in place of usernames
+- Fixed issue where invite to channel modal did not update properly when switching between channels
+
+### Compatibility  
+
+#### Config.json Changes from v1.2 to v1.3
+
+Multiple settings were added to [`config.json`](./config/config.json). These options can be modified in the System Console, or manually updated in the existing config.json file. This is a list of changes and their new default values in a fresh install: 
+- Under `EmailSettings` in `config.json`:
+  - Removed: `"ApplePushServer": ""` which is replaced with `SendPushNotifications` and `PushNotificationServer`
+  - Removed: `"ApplePushCertPublic": ""`  which is replaced with `SendPushNotifications` and `PushNotificationServer`
+  - Removed: `"ApplePushCertPrivate": ""` which is replaced with `SendPushNotifications` and `PushNotificationServer`
+  - Added: `"SendPushNotifications": true` to control whether push notifications are sent to mobile apps
+  - Added: `"PushNotificationServer": "https://push.mattermost.com"` to 
+
+#### Database Changes from v1.2 to v1.3
+
+The following is for informational purposes only, no action needed. Mattermost automatically upgrades database tables from the previous version's schema using only additions. Sessions table is dropped and rebuilt, no team data is affected by this. 
+
+##### Channels Table
+1. Renamed `Description` to `Header`
+
+#### Known Issues
+
+- When navigating to a page with new messages as well as message containing inline images added via markdown, the channel may move up and down while loading the inline images
+- Microsoft Edge does not yet support drag and drop 
+- Media files of type .avi .mkv .wmv .mov .flv .mp4a do not play  properly
+- No scroll bar in center channel
+- Pasting images into text box fails to upload on Firefox, Safari, and IE11
+- Slack import @mentions break
 
 #### Contributors 
 
 Many thanks to our external contributors. In no particular order:
 
 - [florianorben](https://github.com/florianorben)
+- [npcode](https://github.com/npcode)
 - [42wim](https://github.com/42wim)
 - [cifvts](https://github.com/cifvts)
 - [rompic](https://github.com/rompic)
@@ -45,6 +103,7 @@ Many thanks to our external contributors. In no particular order:
 - [alexgaribay](https://github.com/alexgaribay)
 - [vladikoff](https://github.com/vladikoff)
 - [jonathanwiesel](https://github.com/jonathanwiesel)
+- [tamtamchik](https://github.com/tamtamchik)
 
 ## Release v1.2.1