The Steam Client Beta has been updated with the following changes:
General
The ability to mark games as Private has been added to the Manage menu for games in the library. Read more about the feature here.
Added a new "Privacy" page to the app properties dialog with the new Private setting. The "Hidden" option is also available on this new page.
The option to reset overlay settings and cache data has moved to the new Privacy page.
Added a private mode indicator to the Manage button if it has been enabled.
Steam Store
An updated shopping cart is now available, see this post for more details.
SteamVR
Fix for rare crash when showing or hiding non-VR apps in the SteamVR dashboard
SteamInput
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Fixed Controller LED Color selector UI.
Source: https://store.steampowered.com/news/gro ... 2946478691