So last beta for BBT went as the following: I got an email for the game beta code, downloaded the game, played various modes.
There was a beta forums thread, in which users who had access to the beta could report bugs/glitches, to help iron out the final product.
I have absolutely no idea how the process will work, so please don't take my words as verbatim for how The Behemoth plans to launch the beta for Pit People.
With that all being said, I am also very exited! I have loved all of their games thus far and can't wait to try out their newest one!