Though I haven't finished my two ongoing play throughs, figure it's a weekend and what the hell. The full beta is now up. Contact me at one of three places if you want in:
My email: firstname.lastname@example.org
From there I'll supply you a link and you're off. Of course, by downloading said you file you're implicitly agreeing to actually provide feedback and not just burn your weekend. If you want to do that, may I recommend frisbee golf?