Oh dear. I was hoping that this wouldn't happen. In honesty Grant Morrison extracted the last useful story material from the character a long time ago. Bringing her back is fairly pointless.
(I like the idea of Cyclops building a holographic fake-Jean to talk to though - it is the final underlining of the fact that the pressure has cracked him and he is properly radio-rental. Couldn't they have left it at that? *le sigh* Ah well.)