Robot Entertainment’s Orcs Must Die! will be released this October for the Xbox 360 and PC.
That’s 5 October for the Xbox LIVE version and 12 October for the PC one (coming via Steam). No confirmation of price just yet, but I’d imagine it’ll be in the usual $15 USD range for XBLA titles.
For a great look at the evolved tower defence style game in action, play through this ‘interactive’ (ie; choosing which youtube video to show next) trailer. Robot Entertainment has really put in the hours for this, because the potential variations mean they must have produced more than 60 videos.