Minecraft version 1.5 [UPDATE]

Hello, everybody!
Minecraft 1.5 is out and it's available for free here.

There's a lot of stuff that's been updated in this version.
Here's just a little of the massive changelog:

  • Mobs can have custom names
  • Added Hopper (collects items and moves them to containers)
  • Added Dropper (similar to Dispensers, but always drops the item)
  • Added Activator Rail (activates TNT Minecarts)
  • Added Redstone Comparator (used in Redstone logic) 
  • Smooth lighting now has three settings (none, minimal, maximum)
  • Some hostile mobs now are harder in Hard difficulty
  • More detailed death messages 

Also, 2 new commands have been added:
  • /scoreboard
  • /effect