Java Edition 13w17a

13w17a is the third snapshot released for 1.6.1.

Blocks

 * Hardened Clay
 * Obtained by smelting a clay block.

Gameplay

 * Tooltips
 * Added extra tooltip info in the search tab for the creative inventory.

Blocks

 * Carpets
 * Crafting recipe now gives three carpet blocks.

Mobs

 * Zombies
 * Now have a low chance to spawn more zombies when they take damage.
 * This is an early version of the function; In the future, this will mainly apply to spawning zombies out of sight in enclosed spaces.

World generation

 * Lakes
 * No longer generate in deserts.
 * Water lakes only generate on the edge of desert and desert hills biomes; lava lakes still will, however.

Gameplay

 * Tooltips
 * Shows what category a block/item is in.

Fixes
9 bugs fixed

From released versions before 1.6.1
 * – Jukebox audio volume doesn't decrease.
 * – Tamed wolves and cats despawn.
 * – Silverfish breaking blocks when "mobGriefing" is set to false.
 * – Pick-block and furnaces bug.
 * – Achievement "Hot Topic" uses faceless furnace icon.
 * – Arrows visually float when shot into a block.

From the launcher
 * – Launcher Beta - OS X with Retina Display is pixelated.
 * – New Minecraft Launcher unable to play/download snapshot.

From the 1.6.1 snapshots
 * – Custom language-pack removal.