Minecraft wiki entry for Caves_%26_Cliffs, associated text: Caves & Cliffs is the name of two major themed updates for Java and Bedrock editions. The first part was released as Java Edition 1.17 and Bedrock Edition 1.17.0 on June 8, 2021,[1] which focused on blocks and mobs. The second part was released as Java Edition 1.18 and Bedrock Edition 1.18.0[2] on November 30, 2021[3] and brought revamped overworld generation, including new caves and mountains.