They've released the sources. You can build the fw yourself and see what's there. Also there's a pre-compiled fw posted on irc channel yesterday by one of the users.

PS BT doesn't work for now. Music in headphones is good! I couldn't accept N9's audio quality, so had to stick to old ipod classic (N9 imho was somewhat worse). I think now I can listen to music on X (though time will tell). I'm using sennheiser px-100 ii.