Call of Duty: Black Ops' Steamworks support, specs announced

Though it was sort of announced by Treyarch in a post on the
Call of Duty forums, Valve has now officially
confirmed that
Call of Duty: Black Ops will use Valve's Steamworks for auto-updating and achievements. It'll also use the Steam Cloud for storage of profile and configuration settings. The game is available for pre-order now on
Steam.
If you're wondering whether your computer will even allow you to play it, Treyarch also announced the
minimum specs. You've got 12GB free, right?