Linux SteamRT3 Beta
The Steam for Linux client can now be run inside a Steam Runtime container. This will help the Steam client provide a more consistent experience across multiple distributions. This is the same technology we use for Steam games.
The SteamRT3 beta client is distributed alongside the regular beta client. You can opt-in to the beta client via the 'Use experimental SteamRT3 Steam Client' toggle in Settings->Interface.
The SteamRT3 beta client has been updated to 64 bits.