Yeah, the X3 connection is......interesting.
I doubt they are going to kill Cyclops; otherwise, bringing Jean Grey back (even if it a time-traveling one,) is illogical. I think it is a given Cyclops and Emma's relationship is going to be over after this event, and the return of Jean speaks the obvious.
If not from the actions of this event, the new editorial policy will ensure that by the end of next year, every marriage in the universe will be dissolved or written out of existance (Mephisto better start copying some pre-written contracts, haha.)
Also, the person who died in AVX # 11 will return.
This is off-topic, but, I really wish Marvel would bring Janet van Dyne back. I was thinking about the death in # 11, and realized how much it irks me that she has not been brought back.