* Delay/repeater blocks
* Beds
* Added three new half-size blocks (wooden slab, cobblestone slab, sandstone slab)
* Slimes have a higher spawn rate (?)
* New Mojang logo splash screen
* Graphics settings screen
* New textures (?)
* Ability to toggle between classic lighting and "smooth" lighting
* Worlds now use a generic McRegion chunk save format, with built-in auto conversion
* While starting a new world, players can choose their own name and seed to generate the world
* More than 5 Worlds possible
* Scrollbars in both the texture pack list, and in the map selection screen
* Added whitelisting to the server. To use, enter “whitelist <cmd>” where cmd is “on”, “off”, “add <player>”, “remove <player>”, “list” or “reload”
* F1 now toggles HUD.
* F3 can now be toggled.
* When F3 is pressed, mobs display a number over their head. This number is referred to as the "entity id" and can be seen in the console when players connect to a server.
* F8 toggles mouse smoothing
* In 3rd person mode, character can be visibly seen to bob side to side when you walk (only when View Bobbing is enabled).
* Sandstone is now found at the bottom of naturally generated sand.
* All pressure plates now require two of its materials, instead of 3. The new stone slabs are now created by using 3 of the materials (see specific block pages for further information)
* Mine time for Sandstone decreased.
* Redstone dust will get darker the farther away it is from a source of power.
* New painting added of a flaming skull.
* Some blocks of ice have curved edges.(Needs clarification.)
* Blocks break slower while in air. (Needs clarification.)
* Less passive Mobs when on harder modes (?)
* Deleting world confirmation changed slightly.
* Lapis Lazuli now drops 4-8 pieces when mined instead of 1 in SMP.
Bugfixes:
* When breaking double slabs (one slab placed on another) it will drop two slabs instead of one.
* Wood and logs don't burn forever anymore.
* F1 in 3rd person mode no longer flips view.
* Grassland/Sand-related biome border fixed (Boundaries line up, rather than obviously show chunk borders)
* (need someone with more knowledge) No longer getting Java Log error spam.?
New Bugs:
* Some users reporting worlds getting deleted (confirm?). Deletion may be caused by use of mods from 1.2 that have not updated.
* Levers can be placed on the bottom of a block, as long as there is an open space, and a block horizontal to the open space. The lever will act as if placed on the horizontal block, but looks glitched, as shown here: Media:Brokenlever.png
* If someone uses their bed in SMP, other players may get disconnected. (Un-Recognisable Packet ID: 17)
* Wooden Slabs are best mined with pickaxe, not an axe.
* Zombies cannot hurt players unless the zombie is above them.
* Large chests may cause crashes when opening them (Unconfirmed: crashes may be caused by use of mods from 1.2 that have not updated).
* If debug screen is toggled on in a world and you save and quit to title screen, the graph stays on the screen.
* Lighting bugs on portal, water, and ice blocks with smooth lighting.