What is Halo 3 Epsilon?

Many of you may have noticed that within the past couple of days certain Bungie and Microsoft employees have been playing a little game called "Halo 3 Epsilon". While I cannot say for certain, using some logic and common sense would lead on to believe that this is indeed a build of Halo 3 that is practically the final build. It is common knowledge that games go through different testing phase names, most commonly Alpha, BETA, and I've heard that it can go higher. Well after doing a bit of research on wikipedia, I found out that Epsilon is the 5th letter of the Greek alphabet. Thus, It has led me to believe that this "epsilon" is the final stage before the FINAL Halo 3 build. I'm sure others have come to the same conclusion as I have, therefore it leads me to believe that what I speculate is more or less true. Unless of course Bunjie has one more secret up their sleeves, and the real title of "Halo 3" is "Halo 3 : Epsilon".

Also check out This email I found at Xbox-Scene.com, which all but confirms mine, and nearly everyone's thoughts on what this mysterious Halo 3 Epsilon is.