If a software developer knows he has a number of things to fix on his to-do list, he isn't going to release a Beta to everyone. When I write software, I test it myself, then get one or two people to try it out, and make sure no bugs are found before I release a Beta. If no-one else reports problems, I'll make it a stable release.
If Eden have 100 developers, then they potentially have 100 beta testers in house. Once they are all satisfied that the game is pretty much ready, then is the time to release a beta and test server load, before everything is finalised, DVDs are produced and shipped, etc, etc.
If you want to speculate about the beta, make it obvious to everyone that you are speculating. Posts that are written in a factual style with no valid source may be removed so that we don't confuse our members and visitors. Thanks =)
As of this second there is no known information about the Beta.