Before anyone gets in a flurry over the lack of a PC version, however, please note that this does not mean the game will be console-exclusive. Ron Gilbert has stated, in the past, that the game is also coming to Mac. You PC lovers still have a chance.
Special thanks to Clone2727 for the tip-off on the forums.
Update by Jason: Gamasutra's write-up includes a response from EA regarding a PC version:
Asked about potential PC plans for DeathSpank, a game drawing from genres with strong PC heritage, an EA representative declined to comment conclusively, but told Gamasutra, "EA and Hothead want as many people as possible to experience DeathSpank," and advised gamers "not to read too much into the [announced] SKUs just yet."]