Minecraft wiki entry for Timeline_of_events, associated text: 3 – Java: Seecret Friday Update 3 (Alpha v1.0.1) released. Redstone introduced.
9 – Java: Seecret Friday Update 4 (Alpha v1.0.4) released. Winter Mode introduced.
16 – Java: Seecret Friday Update 5 (Alpha v1.0.6) released. Boats and large trees introduced.
22 – Java: First over-the-internet test of Survival Mode Multiplayer.[15]
23 – Java: Seecret Friday Update 6 (Alpha v1.0.11) released. Bricks and Slimes introduced.
30 – Java: Seecret Friday Update 7 (Alpha v1.0.14) released. Chickens and Music Discs introduced.