Yes, MTV scooped ABC and just leaked it at 10:45pm! 10 minutes before it's on 20/20!

It definitely was supposed to be on 20/20 first even Britney.com can confirm...

"For starters, the world premiere of "Womanizer" actually won't be until 20/20 is OVER. So that's more like around 11pm ET. (Though I bet y'all will be glued to the TV around 9:30pm, won'tcha? I know my Britney fans. Eye-wink ) But the second and perhaps more exciting piece of news I have is this: The DIRECTOR'S CUT of the "Womanizer" vid will be up and ready watch on Britney.com after it airs on ABC."

Is this just a Viacom Vs. Disney showdown or is it Internet Vs. TV?

Watch Britney Spears' new video for "Womanizer":

UPDATE: BritneySpears.com also failed to launch today as planned - Source