From the release:
WARMACHINE: Vengeance brings you the next thrilling chapter of the WARMACHINE saga. Answer the call to war with:
• New warcasters, including new epic versions of some of WARMACHINE’s original warcasters.
• Six new character novice warcasters who bring even more arcane support to their armies.
• New units and solos to expand WARMACHINE armies with new strategic possibilities.
• New narrative fiction picking up directly after the harrowing events of WARMACHINE: Colossals.
• A painting and modeling guide to help you prepare your forces for battle.
• Theme Force lists for each new warcaster, which allow you to create armies based on specialized forces found in the WARMACHINE world.