Sega's announced that House of the Dead: Overkill: Extended Cut will get two exclusive levels when it releases on PS3 later this year. The first of these levels is called Naked Terror, and sees you play as Varla and Candy - previously NPC characters in the Wii version - as you fend off stripper and biker mutants. The second level will be announced in more detail soon. There's more info at the EU PS Blog.
House of the Dead: Overkill: Extended Cut will get a release on PS3 on October 28.