The next and final beta for the game lunches on PS4 later this month with new content; you can read more about the beta and how to access it here. (caffeinegaming.com)
The company recently announced that the third and final beta test will run a few days before the game's release, and will only be available on the PS4 again. (gametyrant.com)
The book is in it's final beta stages, and pre-orders are being accepted for the printed copies. (retrogamenetwork.com)