If the other retrospective videos have still left you confused about the Resident Evil storyline, watch this video for the entire RE timeline...

Miss Razz via gametrailers.com »

If you've been keeping tabs on the latest Resident Evil 5 trailers you would have noticed something rather ... odd. The majority of character and enemy animations are identical to Resident Evil 4. Opening doors, reloading guns, enemy deaths, jumping from ledges, etc are all the same.
Fair enough if Capcom don't want to fix what isn't broken, but there should be at least some improvement in a next-gen game. It's just lazy, otherwise.

Miss Razz via www.gametrailers.com »

"Resident Evil 4 is originally a classic GameCube title, and the GameCube was not exactly well known for its aesthetic performance muscle. With the game appearing on the Wii, gamers have been hoping for some graphical embellishments to complement the new Wii Remote gameplay enhancements. Alas, it would appear that Capcom and Nintendo haven’t taken that into consideration when engineering the Wii version."

mistermostyn via www.gamersquad.com »

Unfortunately this isn't up on youtube at the moment so I can't link directly, but here's the advert for the japanese version of Resident evil 4 on the Wii.

Gary via www.capcom.co.jp »