From the publisher's website:
This 144 page full-color expansion advances the Warmachine storyline and adds new warjacks and warcasters.
Warmachine: Apotheosis introduces new rules that improve the depth of play and enrich the gaming experience for new and veteran players alike. In addition to new warcasters, some old favorites return with new abilities and updated models to reflect advancement and changes to their characters. The book also includes a new map-based campaign system providing story-driven play.
- Warmachine: Apotheosis