Sad news:
it's been confirmed that Jonathan Hickman's awesome run on Fantastic Four and FF will end in October with Fantastic Four #611 and FF #23. No news yet on who might be taking over; I just hope it's not somebody who's going to immediately overturn all the great stuff that he's done with Doom.
In slightly better news, there is a hint that we might not have seen the last of Hickman's take on Doom just yet:
[Hickman] re-energized elements of the mythos from Galactus to Atlantis to the Inhumans and more, as well as finding new roles for classic characters like Doctor Doom and the Celestials. All this and more will factor into his final stories as he brings his larger arc to a grand conclusion.
"Generally speaking, all the FF 'world' elements I've been playing with will get revisited," he teases.