Minecraft wiki entry for Update_Aquatic, associated text: The first pre-release on Java Edition, 1.13-pre1, was released on June 4, 2018, the second pre-release was released on June 15, the third on June 21, the fourth on June 26, the fifth on June 28, the sixth on July 4, the seventh on July 10, the eighth on July 13, the ninth on July 16, and the tenth on July 17. This update had 10 pre-releases for Java Edition, the largest number of pre-releases for any update.