The wait for Book Four of Dreamfall Chapters won’t be much longer. As of today those who have been playing the game on Steam now have the chance to help squash the many bugs that have crept in during the port over to Unity 5. This will, of course, only be for the first three books that have already been released. The release of Book Four will go live soon after.
According to the update, the Dreamfall Chapters Beta will only be available to those who have a Steam account and those playing on a Windows system. Mac and Linux players will have to wait to get their hands on the update at roughly the same time that Book Four comes out. For those interested in helping make the port release successful, and get the next installments out earlier, check out the instructions for opting in here. They hope to have the final release within the next couple of weeks.