Minecraft wiki entry for Timeline_of_events, associated text: 1 major update (1.0.0), 1 minor update (1.0.1), 4 snapshots (11w47a–11w50a), 6 pre-releases (1.9 Prerelease – 1.9 Prerelease 6), 2 release candidates (RC1–RC2)
7 major Beta updates (1.2–1.8), 18 minor Beta updates (1.2_01–1.8.1), 1 Beta test build (1.6 Test Build 3), 2 Beta pre-releases (1.8 Pre-release – 1.8 Pre-release 2)