This update should be compatible with worlds using version 1.6, provided you also update to Minecraft version 1.21.4. As always, a backup is still recommended before updating.

General:

• Updated Pack Format to 61 for Minecraft 1.21.4.
• Updated all item models to use the new Item Model Definitions

Rewards:

• Updated equippable components of custom Armor items to use the renamed asset_id field.