it really does look like a Tail Concerto/.hack crossover thing. it would make sense with that interview in the GU thread that the director or whoever he was (can't remember) didn't want to make volumes for the same game and keep it contained on one disc/box.
it would make sense if they did a crossover thing and it was only for one game. It'd be a pseudo Tail Concerto sequel that would work around it not being a true Tail Concerto game...
it would be interesting, definitely...i wonder what elements they'll really keep from what we've seen in .hack series though other than the MMO thing.
also, the picture itself LOOKS like a MMO in itself. i mean, what is it supposed to be? A town? Certainly doesn't look like a regular town you'd see in Tail Concerto imo. It looks more like a .hack town in that sense.