I don't think so, actually.
As for your spoiler item, that is still up in the air technically. I read everything I could... it's not as definitive as that. It may be "likely" even, but it's not definite.
As for Bell being dead, I think that one of the "Bells" is dead--Alter-Bell. But "our" Bell? No, JJ & co. need him alive and well long enough to really push some things forward.
Although I honestly think that perhaps the Bell we've seen is not actually William Bell.