In Minecraft 1.14, all barrel wood types are available.
A Gold Lantern is crafted with gold nuggets instead of iron nuggets. Currently it has the same functionality as a normal lantern.
Wolves and cats may spawn with different textures. Wolves may be brown, grey or black. Cat textures are related to the cat type and use the textures from Minecraft 1.14. You can find this feature under "Tweaks" in Minecraft 1.12.
This feature is client-side only.