Even with Star Force 2 still not out in the west yet, we already are getting some new details from its successor being made in Japan. These details come from the latest issue of CoroCoro Comic, which we will try to get a hold of. -The game will feature new EM beings called Wizards, which are in same way a carry over from the Battle Network era. They are Navi-like beings that can materialize and be touched and seen. Some Wizards are Battle Wizards and fight EM viruses, so it's implied they have broader applications.
-The new portable device Geo and everyone uses is the Hunter VG. They are capable of materializing Wizards to fo various work for people. It has a Wizard Slot that different adapters can be inserted into. The War Rock (Omega-Xis) and Ox (Taurus) adapters are mentioned.
-The new character featured in the first SF3 wallpaper is Shidou (his last name I can't translate at this time). He is an ace member of the Satellite Police who developed the Hunter VG. He is accompanied by a Wizard named Acid.
-Omega-Xis and Taurus will seemingly become Wizard-like beings thanks to the Hunter VG. Rogue from the previous game is also accompanied by a Wizard named Laplace.
UPDATE: This scan from CoroCoro Comic provides a look at Bud, Rogue and Shidou and their Wizards.