User blog comment:TW6464/Reckoning DLC Leak. Via REDDIT/@comment-2250460-20130129151939/@comment-4950455-20130129200221

I don't know if it was from the same person, but that Omega "leak" (the one with Zaeed) turned out to be wrong, so I wouldn't be certain that this is real.

But it sounds plausible enough, at least.