I think that we will learn more once Fall of the House of X is over. Think that there is a little more to the story of what happens to Jean that they...
and with Jean being hinted to be in this solo, it certainly fits that idea, who else better to aid Ororo in Cosmic Rebirths and Death than her Bestie...
I mean they did show up with the intent of not letting them keep Franklin. They didn't show up with Magneto, Pyro, Bishop and Wolverine because they...