Ed Boon has been teasing as something on Twitter over the last few days, having changed his avatar to the roman numeral for 2, strongly hinting at a sequel to Injustice: Gods Among Us. Or The Grid, depending on where your priorities are. Sure enough, a follow up to Injustice is in the works. It will have your Batmen, your Flashes, and Supermans, probably a Wonder Woman and a Harley Quinn too.
Not a whole lot is known about the game outside of what has been shown int he above trailer. Superheroes are going to beat each other up, you can count on at least that much, and maybe that’s all you really need.