When saw the image below that I found at http://www.cyberconnect2.jp (Cyber Connection 2 are the people that makes the .hack and Naruto games) I come to believe that the project they are working on is a DS .hack game. I didn't think much of it till I read "-To The World!!-" but then something little got my attention, Kite. That's right, Kite form the first four .hack games. if you look carefully near the bottom middle of the picture you will see a little character that strongly resembles Kite form the games. Any .hack// fan will know it's him 100%. I have 3 reasons to believe that Cyber Connection 2 are doing a DS .hack// game
1.) Cyber Connection 2 make .hack// games
2.) The art in the picture looks like a .hack world and the then saying "-To The World!!-" because in .hack//, the game that the characters play is called "The World"
3.) The final clue to backs me up is the little hint in the picture below that shows Kite from his back side. If you look closely you can see all the little detail that is Kite and any fan of .hack will know it's him right off the bat.
With that said, i have no idea what the game will look or play like. All I know is that I hope I don't have to wait too long for this!!! Maybe it will be a .hack//LINK game but I'm only saying that because of the fact that it;s the story they would have to work with unless they do something different or go back to the old games story somehow.
