Valve released tonight a new Steam client beta that includes some notable improvements for Linux users.

Most notably, today's Steam beta update now will default to using Proton for Windows binaries that are registered as non-Steam games. Running by Proton by default should ultimately yield a better user experience.

For Linux gamers the new beta also fixes an issue where non-Steam games would fail to launch when changing the target binary via the browse button.

Another Linux fix is for where Steam's "Stop" button would fail to close a game when launched by an external tool.

Steam Big Picture also now has a setting to disable the screensaver when in-game. Steam Input has a Linux bug fix too.

More details on today's Steam beta update via SteamPowered.com.