Witness now the effective juxtaposition of the fury of Verdi's Requiem with really cute things jumping around and smacking stuff. What else would you expect in the next game from the creators of Castle Crashers? Except poo jokes, of course. Those will probably be forthcoming later.

In terms of information about the game, pretty much what you see in the trailer is what you get. Here are the additional details as posted on developer Behemoth's blog:

Release Date: See Trailer
Console : No specifics yet
Price: No idea
Game Details: Coming Soon

That should cover the basics. the game is in a very super early development stage right now. We're fortunate enough to have some awesome programmers that can get us playable versions of our games very very very early on.