The topic is self-explanatory.
C'mon. Haven't I made it clear that the only way to help at this late date is not to get in the way? If we have time to announce a public beta, then you can bug-hunt. ("Beta" means "we aren't going to make any changes between now and release except to fix bugs.")
I appreciate your desire to be useful, but honestly it's very rare that someone not on the team helps in a way that takes less of Jens's time than him just doing whatever it is.