When I first saw her in RE5, I thought she was put in halfassedly, making her look more like Fiona.
After re-examining the screenshots, I think that woman's facial terrain is too different to Jill's. Now, model swapping is very common in sequels, but they reused Chris' face from 5, so I see no reason for them to model a new face for Jill now.
And for God's sake, Jill's fanboys annoy me sometimes.
--- "I tell ya what... Go in the stall, say five Hail Marys, wipe your ass, and you and God can call it even!"
Hope you realize that 1: this is not the PS3/360 2: the game is not out yet Check out the first trailer of RE5 and see how different Chris looked there. It's obvious that it's Jill but her face may not be done yet. They probably focused more on Chris.