So you saw the title and you are saying, "OH MY GOSH ZOMBIE VILLAGERS!!!" No. This update has none of the new features seen in last week's snapshot, or even the new mob announced. This release is pure bug fixes, with nothing of great intrest. The biggest bug fix is the Nether bug, which would not load the Nether files and leaving you falling into a Nether void (this happened to CaptainSparklez in his Skyblock 2.0 series). Other bug fixes include random suffocation bugs and crash bugs as well. You can update your Minecraft by opening the game, logging in, and pressing Update.Source: Mojang