Eternal Gemstone is a new gem that can be crafted by combining all 8 new end ores. Eternal tools can be crafted by upgrading your netherite tools.
Uranium is a new fuel type. Uranium can be found in the depths of caves. It is much stronger than coal.
Pink quartz is a new ore that generates in the Nether. Pink quartz tier is between amethyst and netherite.
There are new shroomlight variants that generates in caves.
Paraiba is a new ore that generates in cold biomes. Paraiba tools are stronger however also less durable than diamond tools.
Lightning Launcher is a new enchantment (up to 3 levels). It can be used with crossbows.
Amethyst tools can be crafted by upgrading diamond tools in smithing table. Lively amethyst ores can be found in depths of caves. You can craft budding amethyst with a block of amethyst and a heart of amethyst.
Emerald armor can be crafted as usual. It has same stats with iron armor, however getting full emerald armor will give you "Hero of the Village" effect.
Let's give copper more use! Copper tools can be crafted by upgrading iron tools in smithing table. They are a bit more durable and stronger than iron tools.