Also, a few days ago I looked up all the Yu-Gi-Oh sound duels on CDJapan and noticed that for DM sound duels 3 and 4 and Sound duel 1 for GX were always released early in the year, on the 25th of the month and were released in 2004, 2005 and 2006. So by this I'm personally assuming we'll get sound duel 2 for GX on the 25th of Feb-April, right now I think it has more chance of being a release maybe in March than in February, guess we'll see if my guess is right, ey? XD I personally think the album will cover music from the Seven Stars/Society of Light arcs and the new music from season 3 will be released next year.
So yeah, just a guess, but I personally think we'll see it have a March/April release, possibly March. Or they could just totally screw us over XD That's always a possibility.