Is Wesker dead after RE5

Idk but he is in resident evil 5 but they haven't mentioned a resident evil 6 yet

Well, In the unwired tv interview with D.C Douglas, he said that there may be 3 clones of Albert Wesker in the sixth game, I'm not sure, but that's what he said. Because Wesker actually died in the resident evil 5 game, he may have cloned himself for a back-up plan or other situations.