Fixed several small memory leaks in the Steam client
Fixed a rare crash on workshop image update inside the library details view
DLC can now be disabled in the DLC properties page for a game
Fixed a case where Steam could be seen as a voice application on startup and Windows would lower sound of other applications
Fixed some AppVerifier errors/warnings caused by Steam that could make it hard for games to use AppVerifier to verify the rest of their code
Added new profile section to the main menu replace the old community section. This brings Big Picture more up-to-date in terms of design and features with desktop/web community and adds better activity feed and profile views.
Default all games filter to "On Platform" rather than "All Games" if you are not on Windows.
Fix just scrolling by any friend in the Big Picture friends list who has chat history causing the desktop chat for the same friend to open
Change pending friends invitations to collapse into a single friends list entry if there are more than 5 in total
Fix Web/Friends footer buttons not showing in some cases where they were functional and should be shown in the footer
Fix a case where after accepting a friend invite on the web its state in Big Pictures friends list would only be partially updated and it would still indicate it was an invite
Improved Big Picture movie audio / video synchronization along with some general video playback improvements.
Improved performance in some cases with the Big Picture window out-of-focus/in-game. The biggest gain here is on Linux, but all platforms should see some benefit.
Fixed focus when entering the quit menu sometimes not being on the first item
Fixed Steamworks games that utilize the Daisy Wheel for text entry in Big Picture not showing it successfully if they were launched via a launcher or other multi-process scenario
Improved movie playback support and support for animated gifs
Adding of non-Steam games is now directly supported in Big Picture
Non-Steam games now show icon art when available and when no custom art has been set in Big Picture
Fixed a bug where screenshot/out-of-focus mode could kick in when Big Picture had focus if you transitioned into it while already running a game
Fixed a bug where focus may end up in an unexpected place if the button currently in focus is deleted from the UI
Mac OS X
When creating desktop shortcuts make the helper shell script only writable by the local user (reported by Ilja van Sprundel from IOActive)
Steam’s Family Library Sharing is now released for all Steam users. Players who share computers can now also share their available libraries with one another, each earning their own achievements and saving their own game progress to the Steam Cloud. It’s all enabled by authorizing shared computers and the familiar accounts that log into them.