Java Edition Beta 1.9 Prerelease

Beta 1.9-pre1 is the first pre-release for 1.0.0. Considered the "Lost Update", a full version under the name "Beta 1.9" never came. Instead, Mojang opted to delay the release of this update until MineCon 2011 and release it under the name "Minecraft 1.0.0". This decision was made after a few development versions tagged as Beta 1.9 were already sent out, so the name Beta 1.9 was kept for all of the development versions in the gap between Beta 1.8.1 and Minecraft 1.0.0, other than the Release Candidates.

Additions

 * New Mushroom biome
 * Added Nether Fortresses
 * New mobs
 * Mooshroom
 * Villager
 * Snow Golem
 * Magma Cube
 * Blaze
 * New blocks
 * Mycelium
 * Nether Brick, Nether Brick Stairs, and Nether Brick Fences
 * Nether Warts
 * Lily Pads
 * New items
 * Blaze Rod
 * Ghast Tear
 * Gold Nuggets
 * Nether Warts

Changes

 * Debug Feature:
 * Jumping increases your experience.