New Minecraft Snapshot ready for testing!

They released the newest snapshot for minecraft and it's ready to go.  It's looking really good and added some much needed features and a quite a few good fixes as well.  You can see all the information at the link below or read the copy and paste.

http://www.minecraftforum.net/news/625-12w40a-snapshot-ready-for-testing/

-----copy and paste-------
It's Thursday, and you know what that means - Snapshot time!  Let's not waste a moment, and jump right into this week's offering!

• Added huts for the witch in swamps
• Added superflat preset "Redstone Ready" with a 52 layers of sandstone, 3 layers of stone, and 1 layer of bedrock
• Flatworld configuration now allows you to generate trees, strongholds etc
• Now pumpkins, tall grass, flowers, trees, mineshafts, dungeons, strongholds, lakes, desert wells, ravines and ores will spawn on superflat maps
• A number of new NBT tags for items (intended for custom map makers)
• Better inventory management
• The pick block action now works on items
• Pressing the 1-9 hotkeys while hovering over an item will put that item into the inventory bar
• In creative mode, you can now shift-click items from the hotbar to the survival inventory screen
• The left-click action will no longer open doors, pull levers, push buttons or open trapdoors. Use the right mouse button!
• Firespread has been slightly nerfed again to prevent infinitely spreading fires
• Beacon Texture altered, as well as the beam.
• Slimes now spawn in Swamps at night.
  
  Bug fixes:
  
• Fixed the wither's starting explosion not being disabled by the mobGriefing gamerule
• Fixed a few crash bugs related to world generation, map item expansion, and other things
• Reverted previous lighting changes, which corrected such bugs as:
  The Nether being extremely CPU intensive.
  Map generation taking extremely long.
  
• Fixed mob AI considering cobblestone walls as blocks of normal height
• Fixed a few texture oddities with the witch
• Fixed entities in water producing glitchy water sound
• Gaining multiple levels at a time will no longer play the leveling up sound over itself as many times as leveled.
• Fixed the "A 64 bit Java installation is recommended for 'Far' render distance (you have 32 bit)" message being covered by the bottom 2 buttons
• Fixed pets teleporting around randomly
• Fixed being unable to place paintings larger than 1x2 and them popping off if they have been placed before
• Fixed destroying blocks under you with Efficiency-enchanted gear
• Fixed potion spawners crashing the game