Minecraft wiki entry for Seecret_Updates, associated text: The Seecret Updates were a series of ten updates released by Notch during the Infdev and Alpha development stages of Minecraft, often without announcement. They were named after the day of the week on which they were released: the first nine Seecret Friday Updates were released on Fridays from June 18 to September 10, 2010, and the tenth Seecret Saturday Update was released on Saturday, September 18, 2010. Seecret Updates usually included major new features: minecarts and boats, redstone, and sneaking were all introduced in these updates, along with a number of other significant features.