Snyder All-Star Batman follow-up

I was looking at batman books and I never realized that Scott Snyder wrote Black Mirror. I looked around for more Snyder books and saw he wrote All Star Batman but it only lasted 14 issues. He said it was being moved to a new format but I can't find any information on what it was. Only thing I can see is Last Knight on Earth which is a Black Label book. Did we ever get it at all?