It'll be posted whenever - it's not one of the flood tracks, although it's pretty great. It was originally a part of the GMRB competition that DarkeSword ran, so you can already grab it for free.
Oh, I totally already got it. It is pretty sweet. I wasn't necessarily thinking that it was going to be one of the flood tracks, but I was just thinking that it probably should be linked to the album whenever the track is posted.