Here are the changes I can remember that I don't think I saw here:
UI/System
- Activating Turnbase mode immediately pauses character movement. In early patches, your characters reforms into formation first even after you turn it on, which can trigger traps, etc.
- Added in-world dates to the Journal (instead of just day 1, 2, 3, etc). Not sure if this will have significance later on, but probably just a minor change.
- AOO Indicator (the circle) was off and unreliable in early patches - seem to have been fixed.
Mechanics/Rules
- Armor proficiency requirements for non-chest pieces
- Fixed effects and conditions (at least closer to RAW 5E). Some examples:
- Fear from Menacing Attack used to make enemies run away
- Enemies used to not stay in Prone
- Blind/Obscurement applies disadvantage/advantage instead of making Ranged attacks unusable
- Adjusted the action cost of weapon swapping mid-combat (costs an action, not RAW, but there was definitely concern about how easy it was)