Chris is infected with some sort of virus in Resident Evil: Revelations.This is heavily implied in the trailer.
The mansion portion of the Resident Evil: Revelations trailer is a dream.More specifically, Jill's dream. The sequence that involves the mansion ends in Jill and Chris being swept up in water.
HUNK is not the Australian that's in the chair in Revelations.He's got a Midwestern accent in 2, Umbrella Chronicles, and Darkside Chronicles. Unless he moved to Australia for several years, I doubt his accent would change, unless he's just screwing with Chris and Jill. His hair is also a different color and style, so he either dyed his hair or it isn't HUNK in the chair.
Jessica shoots Parker in Revelations.She's in the casino room, holding a smoking gun, breathing heavily. Earlier in the trailer, Jill and Parker are in the same room. And, since Jill lives given the timeline...