Well, that was fast. "Injustice: Gods Among Us" is out today and we now have confirmation of the first bit of DLC. Anti-hero Lobo is set to enter the competition, according to a CVG report. They posted up this pic earlier.
Lobo started off as an alien alien bounty hunter villain in the DC universe, but graduated to anti-hero status when reintroduced as a biker. Of course, none of that really matters, since he and his fellow "Injustice" fighters need to square off against villainous Supermen and the like. Ed Boon tweeted a teaser about a month back, but no information is known as to a release date, price separate from the season pass or availability on Wii u. We assume it's coming to Xbox 360 and PS3 whenever it's coming.