I've decided to (mostly) retire this page, for a number of reasons. It's actually more difficult to stay on top of Minecraft releases and updates now than when I started documenting them here. Release announcements are buried on the main minecraft.net page. There's no RSS feed. The assumption seems to be that anyone who plays Minecraft will quickly learn about any new version because their client will prompt them to install it. But of course this is less useful for Minecraft server admins like myself. Complicating things even further, there are now so many different variants of Minecraft, that it's difficult to know which I should concentrate on. In any case, the official Minecraft wiki does a good job of documenting client and launcher versions.
For current information about Minecraft, you can try the following: