I want to start by highlighting the 3 new Nether biomes. The first two are the Crimson and Warped Forests. Each are forests in the Nether with their own types of wood, grass and plants. The Crimson Forest is red and the warped blue. The next biome is the Soulsand Valley, a valley made completely out of soulsand with humungous bones dotting the land. All fire lit here (or just on soulsand) turns blue.

Replacing the pre-1.16 zombie pigman is the zombified piglin. A zombified version of the piglin. The piglin is a humanoid pig tribesman which you can trade with. In Crimson Forests you can find hoglins. Vicious wild boar-like creatures who are scared of warped fungi! If zombified, hoglins become zoglins. As well a dangerous mobs you can find the calm peaceful striders. If you take it upon your self to saddle one, you can ride it across lakes of lava!

If you search deep enough into the Nether you may find yourself a bastion remnant. Remnants are ruined temples and home to piglins. They hold hordes of gold if you're brave enough to venture in! There are many more features in the 1.16 nether update which I hope you explore yourself. For a full list of updates please go to https://minecraft.gamepedia.com/Java_Edition_1.16. Have fun in the magical world of minecraft!