Oh it's definitely something big. Junichi Masuda is even retweeting it all of the tweets about it.
True to The Pokemon Company/Game Freak form, they're announcing this on their own terms and staying out of E3.
I don't quite think that you have a grasp on just how big a deal the flagship Pokemon games making the jump to consoles really is. It's right up there, if not higher, than when it made the jump to 3D.