198MB. Currently downloading, so I can't comment on the changes just yet. I think it's pretty safe to say that this'll be a strong contender for DL GOTY though.
I was always fond of the triple threat of Akuma, Gambit and Hayato myself. Also, (for anyone new to MvC) considering Ken isn't nearly as vicious and prioritised in this as he is in SFIV, I don't think we'll see that many of him... so that's a load off my mind. He'll probably be replaced by Magneto, Cable and Sentinel though, which (in my mind) is a lot worse.
On a slightly less melancholic note, the addition of custom soundtracks was a masterstroke. No longer will we have to suffer through
that song repeatedly while deciding who to choose out of
56 fucking unique characters... Christ, this summer's gonna be awesome. I can't wait to be taken for a ride all over again.
UPDATE: So it turns out the demo is
ONLY 2 player offline versus. So I can't even play it. FUUUUUUUUUUUUU-
On the other hand, there's a delicious crispness about the new revamped UI that I love and there's a small guide to playing included, which I thought was a nice touch. Yes, that's literally all I can talk about. :(
http://strategywiki.org/wiki/Marvel_vs._Capcom_2
See something missing... add it.