Alright, so the beta for 2.1 is fast approaching, and we're about to start picking beta testers. For your edification, here's how we go about choosing testers, and how the beta process works.
As we've said many times, the closed beta is not an opportunity to just get and play the mod early. Because of the limited size of the development team, and the large scope of the mod, beta testing requires a serious time commitment and a willingness to wade through hours of playing and replaying the same situations to provide useful feedback and data we can use to fix bugs, balance issues, and anything else that comes up.
As a result of this, we only pick testers out of our active community. This isn't because we think other people can't do it, it's just that we have limited slots so we have to choose people who we know are invested in making the mod as good as possible, and are willing to suffer through the repetition for it.
So, if you have fewer than five posts and apply because it "could be fun" there's basically no chance we'll pick you. The best way to get picked is to post bugs from existing versions, post suggestions, and get involved in discussing it. That's really the only way we know people are dedicated enough. Otherwise, just wait for the final release; it'll be a lot more stable, and you can have all the fun you want to by playing normally without us telling you when/how/what to play.
For those who still want to do it and haven't signed up for consideration yet, the thread can be found here. If you're primarily active on another site (ModDB, Facebook) I can think of some people we'd be happy to have, but you do need to have a forum account to do this, since we organize the distribution and reports in a subforum.
We will be choosing the 15-20 2.1 beta testers by July 1st, 2013.