Andy Diggle is no longer under an exclusive contract with Marvel, according to no less of a source than his own Twitter account:
At Marvel, Diggle’s written Thunderbolts, Daredevil and event book Shadowland. His next project to see release is the western miniseries Six Guns, debuting in November. Perhaps best known as the writer of acclaimed Vertigo series The Losers (which inspired a 2010 film), it should be interesting to see where Diggle ends up next.

October 18th, 2011 at 7:45 pm
Man, I’d give (insert rather important item) for him to be writing another Adam Strange project, especially if they could somehow steal Ferry back with McCaig coloring.
But I’m sure there are some completely fresh projects he’d be great on. Anything he does (and not just DC) will at least get a looksie from me.