Along with some great footage from the new game we have an interview here with Will Evans a Designer on the game.

We have a look at the new world, cut scenes and some great new characters (along with Batman, Robin, Cyborg, Lex and Joker):
Beast Boy
Billy Batson
Black Manta
Catwoman
Doomsday
Frankenstein
Gorilla Grodd
Grayson
Harley Quinn
John Stewart
Martian Manhunter
Shazam
Sinestro
Stargirl
Supergirl