From the announcement:
Mantic Games is pleased to announce that Wave Four of The Walking Dead: All Out War is now available in stores and from the Mantic website. This latest wave of The Walking Dead tells the story of Rick's ill-fated encounter with the tyrannical boss of Woodbury: The Governor.
At the heart of this new wave is the Made to Suffer expansion. In this narrative campaign, players have the opportunity to relive the battle between the Atlanta survivors and the inhabitants of the Woodbury estate. From the dramatic arena battle to the final, shocking encounter between Rick's gang and the Governor's tank! Also in this expansion are new rules for creating epic, larger scale PvP battles featuring dozens of Survivors, along with secret objective cards.
Alongside Made to Suffer, Walking Dead fans can also pick up individual boosters to expand their gang of Survivors. Highlights in this wave include Michonne armed with an Uzi, an alternative version Rick Grimes and, of course, The Governor himself. What's more, there's also a range of MDF houses available to accompany the release. Designed to match the layout of the Woodbury playing mat, there are four houses available with opening doors, interior detail and removable roofs. They can be bought individually or as part of a set.