I was going to ask why we needed another Bayonetta 2 thread, but thanks for not sullying my beautiful and glorious thread with this.
Bayonetta 2 isn't going to be a major seller and it isn't meant to be. It's a supplementary title being released right when these types of titles get released. It definitely should NOT be delayed. An October release is excellent timing. First, it's before the major holiday title which is Super Smash Bros. for Wii U. Second, it's right after Super Smash Bros. for 3DS. I'm still betting on Bayonetta being a newcomer in Super Smash Bros. and I expect her getting a trailer late September/early October. The character and the new game would get even more exposure right before release. If Nintendo fans didn't know about her before, they sure as hell will. That's pretty brilliant if this comes to pass.
While hardly a sure thing, there's some evidence supporting Bayonetta showing up in Super Smash Bros. First, Sakurai was seen hanging around Platinum Games right around the beginning of development, even posting a photo of his visit on Twitter. Second, Bayonetta 2 is a Wii U exclusive (and I really wouldn't be surprised if Nintendo now partially owns the character). Third, there's a Wonder-Red trophy in Super Smash Bros. so Platinum Games has some kind of presence in the game (though Nintendo owning the rights to The Wonderful 101 could have more to do with it). Saving a Bayonetta reveal for right before Bayonetta 2's release is total hype get. Unless Nintendo colossally fails to capitalize on introducing fans to Bayonetta via Super Smash Bros., they really couldn't ask for better timing.