The game has been released via Steam Early Access in Sept 2014. You can now join in the testing phase.
If you previously registered for the Beta program, you will be part of a random selection of registrants who will be given a free Steam code for the Early Access.
If you are selected, you will be contacted via the email address which you used to register.
If you have any questions, please contact us. In the meantime, please join in the discussion on the game forums