Valve has gone live with the latest beta update for SteamOS. There's only a few handheld devices that ship with SteamOS preinstalled from the factory - Valve's own Steam Deck, and the SteamOS variant of Lenovo's Legion Go S and Legion Go 2. However, the devices mentioned in the latest SteamOS beta update join a growing list of third-party gaming handhelds which now have beta compatibility when SteamOS is installed by the user after purchase. Other devices which Steam already identify as having 'beta' SteamOS support include the ASUS ROG Ally and Ally X, Lenovo Legion Go, and 'other AMD powered handhelds'. There are several reasons to consider installing SteamOS on a third-party handheld with beta support.