Hello,
Unfortunately there is no document with every card’s major change, however, we do state in the extra when and what was changed on a card if it was a big change, alongside the date.
You could for example search “Jan 2023, Feb 2023, Dec 2023” and you can find these changes
All major updates can be found here, but these will not be card specific: 📝 AnKing Step Deck Update Log