The thing that worries me about those leaks, is that it sounds too stupid and Village-esque to be true. But knowing Capcom, because it sounds so stupid and Village-esque, it just might be true.
The Capcom data breach from a while ago did say something about a Resident Evil Apocalypse or something. So this could just be nonsense working off of that. Considering how Village ended and the Rose DLC taking place in the future, I don't get why RE9 wouldn't follow up on Chris and the whole BSAA thing. Though I guess ignoring plot threads is par for the course with Capcom.
However, what I do find interesting is that Dusk Golem has said that 9 would act as some sort of finale for the series and that it would be the last numbered entry with other games taking place in between other games. While things might have changed since then, I do think we have seen evidence of this already in Resident Evil 3. As we know from the original games, Jill was very underutilized post RE3, with Code Veronica and Resident Evil 4, in all of its versions, seemingly omitting Jill from the main storyline. Yet, in the Resident Evil 3 remake, we see a scene of her grabbing the broken vial like there's more to come.
Could this be what Dusk Golem was referring to? A game about Jill set between 3 and 4? It does seem like a great way to capitalize on these remakes and could very well be the reason why they exist to begin with. Establish a new version of the events to branch off new stories from. With the way the main series has been heading, I think something like this could be exciting. Kind of like how the Star Wars sequels messed things up so bad that we're now getting stories between Return of the Jedi and The Force Awakens in an effort to "make things right."
The remakes have been the best thing about this series in a long time, so I'm definitely down for more of those type of games, especially if they bring it back to the earliest part of the timeline. Though, I would hope we get Revelations 3 first to wrap up Alex's story which just seems to be in limbo. Unless Revelations 3 does end up picking up the Chris/BSAA storyline and weaving Alex into it as Village was also said to have originally started as Revelations 3. So maybe that plotline was a remnant of its Revelations 3 days as Alex Wesker was even said to have originally played a minor role in Village which was likely scrapped when it became RE8.