Increased chunk saving frequency on the server.

The multiplayer join server screen now remembers the latest entered IP.

Proper hurt animations and sounds were added to mobs.

When this was released, Notch accidentally mislabeled this as Alpha 1.2.3_05.

A bug related to mobs vanishing was fixed.

Fixed infinite looping by disabling leaf decay.

Players in boats and minecarts now receive terrain updates.

The debug screen only displays by holding F3.

It's possible to attack things in Multiplayer now.

Hurting animations for players and animals were added.

The debug screen now shows the player's position.

By pressing F4 on the keyboard, the player will spawn a Nether Portal.

Present in only 1.2.2a is a debug command.

Fixed volume sliders not saving properly.

Zombie pigmen and ghasts no longer get hurt by fire and lava.

Duplicating buttons when resizing screens fixed.

Getting hit with a higher damage while recovering from a smaller one works as intended.

Players and mobs on fire, in lava, or next to cacti no longer spam sound effects.

It now takes longer for the 'took too long to log in' screen to appear when connecting to a server.

More animation support was added in 1.2.2b.

Two versions of this build are available in the launcher, 1.2.2a, and 1.2.2b.

Signs on the sides of cacti no longer crash the game.

Mob spawning code were strangely reverted to the older version.Leaves particle colors now reflect the biome instead of having the grayscale texture.Fixed a bug where dropped items would disappear.Soul Sand no longer generates in the Nether.Fake chunks generate in the Far Lands, as a side effect of the new world gen.In third person mode, pressing F1 will create a view looking back at the player's own face. Pressing F1 hides the HUD and the view-model from the person's view.Grass and Leaves are now a darker shade of green.Higher lighting values are required the deeper they are to keep mobs from spawning.Stairs, crafting tables, chests, and furnaces now face the same direction as the player when placed.Fishing, along with Raw Fish and Cooked Fish were added.This also caused the world setting 'Winter Mode', to be removed with this patch as well.The terrain generator was overhauled, making things look less.New to this update, hell The Nether was added.

Should the bit about the Farlands even be here, seeing as the Farlands is just the world gen buggin' out? Maybe get a sample of both creeper sounds?

Minecraft alpha 1.2 6 launcher