Frostiful will be updated to 1.21.3 as soon as update 2.0 is completed. This update will not be supported beyond a single release.

Known items to complete (though more may be added as needed):

• Convert trial spawners in the Frostologer Castle to use the trial_spawner datapack registry, rather than inlined trial spawner configs.
• If possible, datafix old icy trial spawners to use the new datapack spawner, too.
• Update Banner Pattern item textures
• Update Smithing Template item names
• Rewrite custom armor trim rendering to hook into the vanilla atlas, this will possibly fix #161
• Convert all recipes to datagen
• Update attribute IDs to remove generic. prefix, and datafix this change similarly to Thermoo