it's now set for September 25th!
Check out this website for more info:
Pre-orders are available for the regular and Blu-Ray versions of the movie on Amazon. Also, along with purchasing the movie (regular or Blu-Ray), an UltraViolent Digital Copy will be included.
The regular version is $18.89 and the Blu-Ray version is $21.61.
-2 Featurettes: "Las Plagas: Organisms Of War" and "The DNA Of Damnation"
-Gag Reel (I'm assuming that this might be similar to the gag reel in Degeneration)
-Concept Art Gallery (Blu-Ray Exclusive)