Any fan of the .hack series will be glad to know that there is going to be an online game titled '.hack//Framents'... It's coming out before the first G.U. game is even released, also.
I've found a number of places where you can read information about it and such, so here:
Official Website
.hack//info center
IGN Article
Another Article...
After reading through all of those, I'm pretty interested in what this game is actually going to be like. I'm definitely glad that they are coming out with all of these new games, they will be keeping me busy :D
But if anyone has any other interesting links, feel free to post them here...