Marvel's Shot A Secret 'Avengers' Trailer, Featuring The Villain?

It's almost too fucking bad that we live in a universe filled with eternal spoilers and the death of the reveal. I realize that I contribute to the perpetuation of this problem, but I can't help it. I'm an addict. Word vomiting out of Ain't It Cool News is that Marvel has already shot a secret trailer for The Avengers, which will be attached to either Captain America: The First Avenger, Thor, or both. And oh yeah, the trailer drops the reveal on the villain behind the enormo-flick coming out next year. This would have been a total balls-draining geekgasm to experience without foreknowledge, but c'est la internet or whatever.