According to IMDB she’s only doing two and she’s only listed as rumored to be part of one of those. Not that IMDB is ever all that accurate when it comes to things that haven’t happened yet. Either way Resident Evil Four hasn’t begun casting anyone yet and the script isn’t final so she’s got time.
Well Biohazard: Degeneration came out for a reason - they were/are trying to bridge those events to the new film and maybe have some of the RE 5 game plot on there too. So very likely she will die in the next film, maybe appear for a few minutes into the film and kill her off, and then introduce the new characters. I have no idea where they are going to take the story though. Wesker will probably have a bigger role here, that’s for sure.