Oh wow. Hasn't this happened in the past, where an ad (I think specifically for BBMA) made it seem like Gaga was performing, but then it was wrong?
Either way, I hope it happens, but it'll be interesting to see how they do it. With Gaga now in NYC (likely, hopefully, for SNL), it'll depend on where they host (if it's even just one location) I think.
Also, somewhat surprised they'd do ROM again, if they're really pushing 911. But it makes sense for the health of the album/song and Grammy chances.