The German C&C fan site, United Forum, has done some more research and speculate that Command & Conquer: Alliances could be a new battlelog system, not the name of the next C&C game. This possible C&C: Alliances battlelog would work in a similar fashion to the way Facebook works. A battlelog system is already heavily featured in Battlefield 3, one of EA's other big franchises. United Forum even made a mock up screen shot of what it could look like, using the Battlefield 3 system for reference.
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This speculation could be on the right track because in the original interviews with Jon Van Caneghem he discussed building a social/Facebook like platform for Command & Conquer fans. So a centralised online system for both the past C&C games and of course new games makes a lot of sense. Please keep in mind this is just guess work right now. Nothing is official.