Browse through your games' installed and purchased DLC with ease.
One of the most notable changes, for me at least, is the inclusion of a DLC menu on the games library tab. All you need to do is go to your library (in 'detail view'), click on one of your games, and in the right-hand panel it will show all the DLC you own for that game, if you have it installed, and when you bought it. There are also options to manage the DLC and find more in the store.
Other changes include some fixes to dropdown options in settings, and crashes on OpenGL games.
The ability to delete Steam web browser cookies has also been added too.
Take a look at the full update listing on the announcement page here.