Preordered it on newegg for $33 and to get the limited edition, shipped already, should be here tomorrow. Disagree with some of the characters choices included but as I said before, those 3 companies have such a huge stable of characters to choose from they can't put all the fan favorites in there. Just glad megaman x is finally in a crossover game(and regular megaman in smash, it must be a good year for megaman), will post with first impressions tomorrow.
Played quite a bit of it, for people who fear stages that take a long time, the battles do indeed take quite awhile, even in the beginning. The game has a weird break the environment system to get items similar to endless frontier. Also, the game is really easy, there's no real danger of getting your guys killed so feel free to experiment/wander around the map to find breakable objects. Most fun thus far is the remixed theme music and identifying all the moves the characters use.
oh and there's a system that's kind of like forced evasion where they have a guard bar you need to break before you can hurt them and if you let them touch the ground, the barrier comes back. It's better than forced evasion though as your turn doesn't just end.