The following images were put up from Tom Clancy's Rainbow Six: Vegas, to be announced later today. The game is rumored to be under development for Xbox, PS2 and Xbox 360, and more details will probably be released tonight. Looks great except for some smaller details (as the doors), but the game will probably not be released for some time.
Update: According to a press release we just received, the game will be released on current and next gen systems, and on PC.
Update #2: Release date is Autumn 2006. More info in comments 19:36.