Hey its me Supermarioman2 (or EpicDonut64).
On this blog I will post what's new to the Minecraft snapshots and how to install them!

Minecraft 1.5 is coming out on the 13th of March

Ito s finally time to release the Minecraft Redstone Update pre-release!

The change log is as followso ¦

• Added Redstone Comparator (used in Redstone logic)
  
• 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 Daylight Sensor
  
• Added Trapped Chest
  
• Added Weighed Pressure Plate
  
• Added Block of Redstone
  
• Added Nether Brick (item)
  
• Added Nether Quartz and ore
  
• Added Block of Quartz, with half blocks and chiseled variants
  
• New command: /scoreboard
  
• New command: /effect
  
• Containers and mobs can have custom names
  
• Inventory management has been changed, for example you can drag-place items over slots
  
• Texture packs now have separate images for each block and item, and can have animations
  
• Nether Quartz Ore now spawns in the Nether
  
• Smooth lighting now has three settings (none, minimal, maximum)
  
• More detailed death messages
  
• Some hostile mobs now are harder in Hard difficulty
  
• Many, many, bug fixes
  
• Removed Herobrine
  

Install for mac:

download the latest snapshot minecraft.jar file (from mojang.com) and drag to your desktop.
In finder, open the "Go" dropdown menu up the top of the screen, and click "Go to folder"
type in: /Library/Application Support/
Click go and click on the "minecraft" folder. Then click "bin"
You will find a minecraft.jar file.
rename it minecraft.jar 2 and drag the new minecraft.jar file in to the bin folder.
run minecraft!

to go back to the normal version, open minecraft, click options, click force update and run minecraft normaly.

pc:

download the snapshot/pre-release from mojang.com, find the jar file and drag the downloaded minecraft jar file to the desktop.
go to start and type: %AppData%
click roaming
click the .minecraft folder
and click bin
there should be a minecraft jar file in the bin folder in the .minecraft folder
re name the jar file in the .minecraft from: minecraft to minecraft1
then drag the minecraft jar file from your desktop to the bin folder
run minecraft.

go back to normal version:
run minecraft and click "Force Update"