User blog comment:Flamesword300/Could Treyarchs 2015 COD be a WW2 game? I think so/@comment-1913529-20140701000728/@comment-2163805-20140701003556

I don't think that multiple endings would necessarily prevent another sequel from coming up. The developers can simply choose one of the endings and consider it canon (a bit like what was done in the C&C Red Alert games).