The biggest addition is a new battle forecast system. The pre-battle screen now shows a predicted outcome before you commit to a fight, ranging from Crushing Victory down to Likely Defeat, color-coded green to red. If your champions are at risk of falling, it tells you.
Modding support has been expanded. All game data can now be replaced by internal name, and new tools let modders control how duplicates are handled, remove core definitions, or skip entire files for total conversions. Load times for mods are faster, and a modding guide is available on the wiki and in the Steam guide section.
This update also resolves several crash scenarios that could occur during saving, loading, battles, and city destruction. Fullscreen mode now uses borderless windowed for better alt-tabbing and multi-monitor support, and the Builder's Forge received fixes for save duplication and favorites.
Some fixes only apply to new games, so we recommend starting fresh to get the full benefit.