Minecraft wiki entry for Pretty_Scary_Update, associated text: Development on the Pretty Scary Update began the week after 1.3.1, which was released on August 1, 2012. 15 development snapshots for 1.4 from 12w32a to 12w42b were released. During the development period, 1.3.2 was released. The 1.4 Pre-release was unveiled on October 19, 2012, so that modders could start preparing their mods before the launch on October 24, 2012.[4]