EA CEO John Riccitiello mentioned during the company's reduced earnings conference call yesterday that the publisher plans to launch its "major MMO" in the spring of 2011. With no other announced "major MMO" in the works at Electronic Arts, the common wisdom of the Jedi (which can sometimes lead to bad things), points to that being Bioware's Star Wars: The Old Republic's release window. The company refused to elaborate further or acknowledge what game the executive was talking about.
Eurogamer notes that other possibilities are Realtime Worlds' APB or Need for Speed: World Online, but neither has the hype of the Star Wars game. Of course, there's also a chance that EA has some super-secret MMO hidden away like a Sith apprentice.
Update: BioWare confirms release window [Kotaku]