During San Diego Comic-Con, we heard the news about a Batman/TMNT crossover. We can get the first issue on December 9. There will be some retailer variant covers and DC Comics has given us a few to share exclusively. Check them out below along with where you can order a copy.
Captain's Comics and Toys
http://www.captainscomics.com/
Hall Of Comics
Amazing Comic Conventions
http://www.amazingarizonacomiccon.com/
Conquest Comics
http://www.conquestcomics.com/
And here's one revealed yesterday.
Midtown Comics