Steam Client Update Released
Client Update - Valve
A new steam client has been released and is being automatically downloaded.

General

Updated Web views to using CEF/Chrome version 60.0.3112.40
Fixed an unintentional issue where Steam clients could experience sluggish frame rate if the Steam Web Helper process could not connect to our error- and crash-reporting servers
Optimized logic for selecting the best local server to connect to on initial Steam connection or reconnect after a disconnect
Steam will now use library folders on other drives to download game updates if the primary drive doesn ™t have enough space left
Fixed some cases where the Steam UI would not notify users about the availability of a new Steam client update as promptly as it should
Fixed web views that pop out in new windows sometimes failing to render
Improved startup behavior of web views on slower machines
Fixed a crash when launching games via steam:// links
Fixed allowing non-Steam games to be added to Family Games if they were selected as part of a multi-selection

Big Picture

Fixed a bug where if you had set Big Picture to use a monitor that is no longer connected to your computer it may fail to start

In-Home Streaming

Added streaming audio drivers for microphone support and seamless 5.1 surround sound on Windows 8.1 and Windows 10 (a reboot after update may be required to activate driver installation feature)
Added command line option -skipstreamingdrivers to skip audio driver checks if needed
Fixed black screen or client crash when streaming from PC with NVIDIA hardware encoding to a Mac

Steam Input

Added Mode level Haptic Override setting to ABXY and DPad modes which can either defer haptic settings to the activators or override the setting for all activators in that mode
Fixed a bug when adding an action set when working from a community workshop file not showing up until the configurator had be exited and re-entered
Fixed controller detection in Final Fantasy XIII and other games
Fixed a bug where PS4 controllers connected via streaming would be ignored due to a local instance of DS4Windows or Inputmapper
Fixed Edit Controller Configuration option appearing for controllers which weren't opted into configuration support in desktop Steam
Fixed a bug where natively supported games could appear to have an x-input controller connected if unused x-input bindings were in their configuration
Fixed a bug where rumble in native SCAPI games did not respect the per game rumble settings
Fixed a bug where some Direct Input controllers would disappear after defining their layout for the first time
Fixed bug where controller templates for non-Steam Controllers would be duplicated in the template list
Fixed some cases where a "Configuration disabled for unknown controller" message would be shown when trying to edit a controller configuration
Fixed Launchers in Steam games not using the Desktop Configuration
Fixed a bug with controller configuration conversion from one controller type to another where some modes such as DPad wouldn ™t be active after conversion
Added support for the Desktop Configurator for when a game asks for the Configurator but the user has disabled the overlay or Big Picture overlay
Fixed bug with On-screen Keyboard in Big Picture Mode ™s web browser losing input
Fixed stability issue with multiple Steam Controllers being connected concurrently
Fixed Steam Controllers staying in Lizard mode after exiting Big Picture Mode
Fixed Lizard mode not working with Steam Controllers after pairing to a Wireless Receiver
Fixed issue w/ Steam Controllers staying in lizard mode when reconnecting wirelessly
Fixed some cases where Steam Controllers would not turn off due to inactivity
Fixed bug where PS4 controllers using Bluetooth would not apply personalization or rumble
Fixed Joystick Move mode for the PS4 gyro

macOS

Added basic Steam Overlay support to games using the Metal graphics API (macOS 10.11 and above). Screenshots and Streaming support for Metal games not yet supported.
Fixed a bug where non-existent GamePad-1 could appear in subsequent launches of Steam after using a Steam Controller

Linux

Updated STEAM_RUNTIME_PREFER_HOST_LIBRARIES logic to still prefer Steam Runtime libraries if they are more recent than the host system
Updated Vulkan loader in Steam Runtime to version 1.0.54, which provides all the extensions currently needed for SteamVR
Added support for shader cache management on supported drivers (Mesa 17.1 and NVIDIA 381.26.08 or 384.59). Shader caches for games launched by Steam are placed in separate folders next to their Steam Library folder and are deleted when each game is uninstalled, or when switching drivers or graphics cards. Individual shaders are tracked and catalogued by the Steam servers in preparation for distributing pre-compiled shaders. This tracking can incur slight additional bandwidth use. The system can be disabled by setting the environment variable STEAM_ENABLE_SHADER_CACHE_MANAGEMENT=0
Fix handling of XDG_DATA_DIRS and .desktop files with command-line arguments when adding non-steam games to your library
Fixed adding arbitrary binaries as non-Steam shortcuts
Fixed game support for DualShock 4 controllers when using recent kernels
Fixed games using the ISteamHTMLSurface interface failing to display content on Linux if they created their browser object too quickly