Minecraft wiki entry for Discovery_Update, associated text: Version exclusive Minecraft Marketplace
Woodland Mansion
Includes everything as of the Exploration Update, except for banners.
5 new blocks:
Concrete, Concrete powder, Glazed terracotta, Shulker box, and Frosted ice
7 new items:
Explorer maps, Totem of undying, Iron nugget, and 4 new spawn eggs
5 new mobs:
Llamas, vindicators, evokers, vexes and cartographer villagers
Mending and Frost Walker enchantments
6 new achievements.