Chuck Dixon out at DC
Or so says this post at the Dixonverse Message Board:
I am no longer employed by DC Comics in any capacity.
Dixon was currently writing Batman and the Outsiders and Robin.
UPDATE: Kevin Melrose reminds us that Dixon had abruptly replaced Tony Bedard as writer of BATMAN & THE OUTSIDERS before the book came out, and has just as abruptly been replaced by Frank Tieri as writer.