Dappled Forest and Poplar Wood Debut in Minecraft 26.3 Snapshot 1
Minecraft 26.3 Snapshot 1 adds the Dappled Forest biome with Poplar trees (and colored leaves), shelf mushrooms, red shrubs, and a biome variant of Abandoned Camp, plus new wool stairs/slabs and a host of world-generation, data-pack, item/block, and server changes, plus an extensive bug-fix list.