The 2020 General’s Handbook updates the core rules for Warhammer Age of Sigmar. It adds new open play rules, which include an Open War Coalition Battle Generator that offers a new suite of rules and random generator tables. This book also allows players to create new Heroes to lead their armies, and updates the Pitched Battle rules, profiles, and points. For Match Play, it adds 18 new and updated objectives for the 2020 season.
Games Workshop recently released Deadly Alliance, a new expansion pack for Warhammer Quest: Blackstone Fortress (see "New Expansion Pack for 'Warhammer Quest: Blackstone Fortress' Board Game").