Looks like everybody's too busy playing the game to actually talk about it!
I can't comment too much myself seeing as I haven't reached Wily's Castle yet, but so far this game is really fun, but overall a tiny step down from Mega Man 9. The graphics are better (actual backgrounds, yeah!) but the music is a bit less memorable than that of the previous game, although I am ever so glad that they didn't outright recycle a bunch of songs like 9 did (stage selected, Wily's castle, etc).
(As an aside, in retro-gaming I hate when a game re-uses old material for nostalgia's sake instead of doing something new but in the style of the old material. A good example would be Sonic The Hedgehog 4 which will start with a blatant Green Hills ripoff called Splash Hills which sports the exact same badniks. I'd much prefer a new zone but done in the style of the typical "tropical" introductory zone.)
Oh yeah, and the weapons don't feel anywhere near as useful as those of the previous games which almost all had special uses. I'll post more once I've seen more of the game.