I'm a little confused. These two quotes sure make it sound like John is leaving after Hell on Earth wraps up, but then they only go on to talk about Roberson working on Hellboy and the BPRD title.
And while next year will also see the conclusion of John Arcudi’s acclaimed run on B.P.R.D...you can read the whole thing here: http://www.ew.com/article/2015/07/06...68976a07744c11“I was sorry to see John go and obviously, it was going to be a very big deal who was going to take over John’s role,” Mignola explains to EW. “And the reason why our stuff has worked for so long is that it’s only been a couple of writers on this stuff. Scott Allie was the editor, now he’s the writer, and then John and I. So the idea of bringing someone in this late in the game was really horrifying.” Despite that hesitation, it was Mignola’s previous relationship with Roberson that helped him realize he already had the perfect successor.
Very hard to imagine anyone else writing the main BPRD title. Maybe it'll end in such a different place that it won't need John at the helm, but, it's still just crazy to imagine the book without him. If he is indeed leaving.
EDIT: from CBR,So, I guess he is leaving. Shit...Following this morning's news that longtime "B.P.R.D." writer John Arcudi would be stepping down from his post