A new Steam Client update has been released and will be automatically downloaded. The specific changes are listed below.
General-  Updated Downloads section, including download-queue management and quick links to throttling and app update settings
 
-  Added "High Priority" app update setting - Steam will prioritize automatic updates for that app
 
-  Added support for displaying default button text for default HTML controls in the Web control
 
-  Update notification indicator when opting into/out of notifications for an app
 
-  Updated SDL with the 2.0.1 release, improving game controller support 
 
-  Moved server browser max pings /minute setting from "Downloads" to "In-Game" tab of Settings dialog
 
-  Improve in-game performance when enumerating community items for some users who have used a very large number (thousands) of workshop items in Portal 2 or hero builds in Dota 2
 
-  Fixed issue retrieving stale data for a Steam Workshop file, immediately after publishing a Steam Workshop file 
 
-  Fixed failing to run a game if it had a very long optional command and triggered the warning dialog
 
-  Fixed crash on exit for the overlay
 
-  Fixed running some install script steps on 2nd game install
 Fixed issue with ever-increasing playtime for games that aren't running
 
Big Picture-  Added Big Picture Offline Mode indicator / Go Online button in top row, visible when in offline mode
 
-  Added a RESET option when configuring a game controller
 
-  Added option to join Steam Client Beta's from the Settings page
 
-  Added button to check for Steam Client updates from the Settings page
 
-  Improved transition when launching a game
 
-  Fixed screensaver not enabling sometimes when a game controller was being used
 
-  Fixed errors when refreshing your Steam login
 
-  Fixed Javascript alerts and dialogs showing incorrectly when using the web browser
 
-  Fixed being unable to click Accept on the SSA dialog if running Steam for the first time
 
-  Fixed UI loop when using the History button of the Account settings page
 
-  Fixed custom categories not showing when selected in the All Games view
 
 Fixed launching game while another game launch was already in progress
 
Windows:-  Fixed a bug where maximizing would lead to an incorrectly sized window if the Steam window was on a secondary monitor that has the primary taskbar positioned on it
 
 Workaround to post fewer win32 message in the in-game overlay for games that dont reliably drain the queue
 
Linux:-  Better track games that use an intermediate launcher
 
-  Fixed text incorrectly getting ellipses in some Big Picture controls
 
 Fixed crash at startup with certain window managers
 
OSX:- Fixed Microphone selection not updating when changed in the settings dialog
 
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