Princess of Mars (US-2009; dir. Mark Atkins)
It will be released on 29 December 2009.
Source: Official website; previous Undead Backbrain article. Thanks to Avery.
Dan and Stan are the world's greatest adventurers -- at least in their own minds! When the two morons are sent to a lost island to rescue a wealthy pair of treasure hunters, chaos ensues. The adventurers encounter a tribe of sexy jungle girls who worship a flesh-eating T-Rex! She-Rex is a tribute to the classic comedy of yesteryear.