Wesker has been alive this whole time.

[The Resident Evil]

So RE CVX establishes that alexia Ashford and Alfred Ashford are the first human clones made by Alexander Ashford used by what is implied the Veronica virus named after his ancestor Veronica Ashford and notice how Alexia and Alfred have mental problems caused by them being clone because that will come in later. In Re cvx albert wesker retrieves a sample of the t-veronica made by alexia fusing the t virus and Veronica virus together. In Re5 at the Spencer estate we see chris and Jill find and fight wesker and he almost kills chris so Jill sacrifices herself to just wound wesker. In the Spencer estate we learn Spencer inv wesker to his estate seemingly to be killed by wesker because he knew how much he hated him and wesker to take his place because of his immune DNA. In Africa in re5 the first scene we see of "Wesker" is him taking a injection for his proto virus even though we know wesker is immune and doesn't need injections at all so something seems to be off. Later on we see chris and sheva fight him near the airship and he seems to be holding back almost like he is not trying to kill them and you see him lose his mind during the fight almost like he knows what is to come soon for him and is very similar to alexia and Alfred mental problems from cloning, during re5 you see this Veronica wesker clone try to compose himself which is not very wesker like with real wesker always calm and stable. When they over inject him and they fight him on the Volcano notice how the uroboros makes him mutate,almost like this not the real immune wesker who can't mutate and would bond with the uroboros. And it is established in umbrella corps that wesker is the new umbrella and alive because it takes place 2 years after re5. What's poetic about that is that wesker in the end became what he hated,Spencer. Also the implications are clear that wesker made this Veronica clone to be a sacrificial decoy for him.Which is very genius and wesker like because,"How do you fight an enemy that is dead to everyone and the world? The answer is you don't fight at all."

 

[Caffeine Addict]

Hmmm. There definitely is a possibility he may have somehow survived, due to his regenerative powers. But I don't know if Capcom will go anywhere with it, for fear of his return being looked upon as outlandish. That would be hard to swallow, I suppose.

Quite frankly, there is a ton of things Capcom will likely never bother to explore again throughout the long history of the franchise. Just because they're Capcom.

The amount of things they add in, feels like stock nowadays. It never really goes anywhere when they do that so constantly. Then it gets to be kind of annoying, right?