Holy crap! From CBR's Lying In The Gutter's column:
Grant Morrison is indeed writing a monthly Batman book after “Final Crisis"/"Whatever Happened To…"/ "Battle For The Cowl" and the like have wrapped.
And the penciller?
DC people tell me it’s one Frank Quitely.
Quite, quite excellent. I’ve got a couple of Frank’s art pages from his previous Batbook “The Scottish Connection" hanging in my hall. I doubt I’ll be able to afford any more now.
Yes, he is already working on it. Obviously.