Command & Conquer 4 "has no DRM," except for Internet-required DRM.
It's no secret that Ubisoft's latest DRM scheme isn't one that's garnering any fans. The requirement for a constant and stable internet connection constantly for one to play Silent Hunter 5 or Assassin's Creed II or the upcoming Splinter Cell Conviction means that gameplay can be halted with any break in connection or fault on Ubisoft's end.
Despite the public backlash over this system, it seems that it is gaining some popularity over at EA. In a forum post by a C&C Community Manager Apoc, it was revealed that Command & Conquer 4 "has no DRM," but gamers must be connected to the internet.