They’re fleshing it in a whole bunch of different places. Summoners finally getting their own unique reforge prefixes like every other class instead of sharing with the mage, new weapons, new late-game health potion upgrades, a new and improved dungeon (for the first time since like 1.0), a better crafting UI, a more helpful guide, loads of new biome backgrounds, and a crap load more. And it’s been like 2 years of spoilers, so I’m probably forgetting some big ones too. Basically seems like anywhere they can say “these unrelated features could still be improved” is likely getting something new.