Supergiant Games released v1.1 for Hades 2 and it is a meaty post-launch update. Two new weapons were added -- the Adamant Rail returns from the first game in a reimagined form, and there is a completely new weapon called the Obsidian Lash which is a whip-type weapon with some really satisfying crowd control.
They added a new region between Erebus and the surface called the Shallows, which has its own mini-boss pool and unique encounter types. The story content includes new dialogue with Odysseus and expanded romance paths.
Balance changes include nerfs to the Sprint Cast build that was dominating speedruns, and buffs to several underperforming Keepsakes. Duo Boons are slightly easier to roll now if you have both prerequisite Boons at Epic or better.
The Hades 2 trainer is fully working on v1.1. All features including god mode, unlimited dash, resource editor, and the Boon rarity modifier are confirmed functional. The memory structure barely changed in this update so it was a smooth transition. If you are using the darkness and bone resource cheats, they work exactly the same as before. The new weapons are also compatible with the damage multiplier cheat.