Valve has rolled out a new Steam client update dated December 19, and it’s already being automatically distributed to users.

The most significant change is the transition to a 64-bit Steam client on Windows 10 and Windows 11 systems running 64-bit editions. Valve says systems still using 32-bit versions of Windows will continue to receive updates to the 32-bit Steam client until January 1, 2026, giving remaining users time to migrate.