According to a post on the C&C forum the January edition of Game Informer will have some exclusive information about this game. Tiberium will be set 11 years after the third tiberium war and will be a game like GRAW/Battlefield/Rainbox Six: Vegas but in the C&C universe.
You'll play Ricardo Vega, a Used-to-be- retired GDI field commander. I'm not going to rewrite the article, so just think of it as GRAW + Battlefield + R6: Vegas in the C&C Universe. So far, you'll be leading a R.A.I.D (Rapid Assault and Intercept Deployment) around the location of the tower in the Mediterranean Red Zone that NOD defended until it was built. There's no mentioning of you fighting NOD, but you will be fighting new Scrin infantry (the two given were Shrikes, little knee-high robots with blasters an a self-destruct, and Archons, think Scrin versions of Elites from Halo)Lets hope this shooter is better than Renegade.
The units that were announced that you could command were standard infantry squads, missile infantry squads, a fugly version of the Titan, and new Orcas. You'll still get special powers, like an "Orbital Slug" that you can call upon your foes.