From the Facebook page of Toon Tumbler, this is the SDCC 2011 exclusive. I am pretty sure it is as I had been told that both Mera and Firestorm would be joining the line-up.
I see Mera, Ray Palmer/Atom, Green Arrow, Hawkman, and Firestorm. Who is that in upper left? Is it Deadman? And who is the blonde woman? Is that Black Canary?