Minecraft wiki entry for Caves_%26_Cliffs, associated text: On Bedrock Edition, Part I started development with beta 1.16.200.52, which was released on October 28, 2020. Most of the Part I features were behind experimental gameplay toggle until the Part I release and were not included in the full 1.16.200, 1.16.210, and 1.16.220 release.[6][7] In Part II, development continued with beta 1.17.30.23, which was released on August 25, 2021. In 1.17.10, released on July 13, 2021, non-beta users were able to test out most of early Part II features behind experimental gameplay.[8]