This is some news I saw at Xbox-Scene.com and just thought I would share it.

Today, several Xbox Live users have seen people on their Friends List playing “Halo 3 Epsilon.” For those who don’t know, Epsilon is the fifth letter of the Greek alphabet, and just like alpha and beta are used to designate applications that are early in development, Epsilon is used for code that is close to its final build.

If you want the full story head over to TeamXbox.com. And to discuss it you can head over to the Xbox-Scene Forums.