August 14, 2014 - Steam Client Update Released

General
Updated desktop user interface styles, simplifying common controls and navigation elements, and neutralizing overall color palette to align with Steam web pages and Big Picture mode
Major update of embedded web browser to increase performance, reliability, and to bring in various security fixes and functionality updates
Work around to prevent duplicate key presses in some cases for games running inside Adobe AIR
Don't delay content updates for games set to high priority
Fixed in-game progress indicators for workshop downloads displaying incorrect percentages for compressed files
Fixed mods and shortcuts not displaying their names correctly in the friends interface and server browser

Library
Games can now be assigned to more than one category at a time
Add "Hide this game in my library" functionality, accessible from the Set Categories menu. Games that are hidden will not show up in library filters except for a new filter called "Hidden", which will only appear once at least one game is marked as hidden. Hidden games are still available for play and will still appear on the user's profile.
Add an "Uncategorized" filter in desktop library filter drop downs. This will appear when a user has at least one game in a category and at least one game that has no categories.
In desktop library details, list, and small views, games can be multiply selected using shift-click and control-click and certain operations can be performed on the group
Added install option to context menu for multiple selections
When filtering by favorites or by owner, display only a single section instead of all the sections that the games are in.
When adding a new category, scroll the category list to the bottom so we can see the category that was just added
Added by-category filter options to the filter drop downs in all library views
When switching between library views, remember the category of the game selected and retain it when possible
In list view with game images selected, display the image on all instances of the game instead of only one
Eliminate extraneous "Favorite" category when favorites are added from Set Categories instead of Add to Favorites
Make type-to-search properly expand categories in list view. Better synchronize type to search between library views.
Remove user categories from navigation bar hover menu. They are still available in the game filters drop-down in the library views.
Add context menu to category headers in library views, containing "Expand All" and "Collapse All", and, in details/mini view, "Show/Hide Icons"
Improve category collapse state synchronization between library views.
Don't show hover effect on list items when a context menu is visible
Add glow effect on hover to 2' library game filter button
Retain selections when switching filters whenever possible
Retain multiple selections when switching between details and list view
Synchronize selection between main window library views and Small Mode.

Mac OS X
This update ends support for Mac OS X 10.5
Updated Big Picture to make use of the Spaces feature for full-screen mode
On 10.9 and above ask the OS to prompt for Accessibility access to enable the overlay

Linux
Updated Steam Runtime with support for newer compilers
Added support for entering custom network settings in Big Picture
Fixed audio being lost when alt-tabbing
Fixed crash when doing a voice chat if you did not have a network connection
Fixed launching SteamVR games

Big Picture
Updated various visual styles across Big Picture including focus treatments
Limit daisy wheel input to numeric entries where appropriate
Improved gamepad navigation through checkout
Fixed custom icons for streaming non-Steam games
Fixed crash when enabling parental controls
Fixed scroll bars disappearing on some EULA pages after scrolling to the left
Fixed daisy wheel adding multiple periods after pressing space twice to end a sentence
Fixed automatic capitalization getting stuck enabled in daisy wheel
Fixed a bug preventing the user from changing payment methods if their stored credit card has expired
Fixed crash on launching Big Picture if your PC has no sound card (or it is disabled)
Fixed crash on game launch if you mashed the A button

In-Home Streaming
Added support for NVIDIA hardware encoding for D3D9+ games on GeForce 650+ cards and the latest NVIDIA drivers. You can enable this by turning on hardware encoding in the advanced options on the host computer.
Reset hardware encoding setting to default off, to minimize surprises now that NVIDIA encoding is available
Added hardware accelerated decoding for Mac OS X 10.9 and 10.10
Reset hardware decoding setting to default on for Windows and Linux, and default off for Mac OS X
Improved software decoding performance for clients with multiple CPU cores
Disabled vsync while streaming for a smoother capture framerate
Fixed being able to scroll the right and bottom edges of a map in certain resolutions
Fixed Steam crash streaming from a host with an i5-3450 CPU
Fixed games detecting both local and streaming controllers; streaming controllers take precedence if they are connected.
Fixed streaming games from Steam when it has been put in Windows XP compatibility mode
Made it more clear that unlimited bandwidth increases latency and is not recommended