SteamOS 3.9.3 Beta: What the Release Notes Say and How to Opt In

SteamOS 3.9.3 is a Beta-channel update. According to the official announcement, it is intended for the SteamOS Beta and Preview channels and contains features that are still being tested. The notes cover all changes since the current stable SteamOS 3.8 release, with changes added since earlier 3.9 preview builds called out separately.

What the update covers

The announcement describes SteamOS 3.9.3 as a Beta/Preview channel update built on the changes since stable SteamOS 3.8. It states that the release notes list every change since 3.8 and separately flag additions made since the previous 3.9 preview releases.

Opting into the Beta channel

The announcement says you can opt into the Beta/Preview update channel from Settings > System > System Update Channel. Expect an unfinished build: the source describes these channels as carrying new features that are still being tested.

• 1. Open Settings on the device running SteamOS.
• 2. Go to System.
• 3. Open System Update Channel.
• 4. Select the Beta or Preview channel as described in the announcement.
• 5. Check for and apply the system update.

The only outcome the source states is that opting in places the device on the Beta/Preview channel, where the 3.9.3 changes are described. The announcement does not specify install size, rollback procedure, or how to return to the stable 3.8 channel.

Fixes listed in the 3.9.3 notes

• Performance issues in STAR WARS: Galactic Racer when resuming from suspend on Steam Machine were fixed.
• An issue that could lead to GPU errors in The Crew Motorfest was fixed.
• Audio issues when hotplugging certain monitors in a multi-monitor setup were fixed.

These items are reproduced from the release notes as stated by the source. They are not independently verified results, and the notes do not describe hardware configurations beyond the ones named.