VGFacts

I'll let you look it up on the log on but they added redstone blocks and nether quartz along with a few other things.

edit: there ya go.


Minecraft 1.5

Watch the Minecraft 1.5 Redstone Update in song form: http://www.youtube.com/watch?v=YmpxpH-tMWc

+ 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
Older

Because OP is lazy I shall post the change log:

Quote:

• 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

Also Snapshot 12w11a has been released already!
Here is the change log for that:

Quote: [MC-250] Ender Dragon can still grief stuff like cobblestone and chests even if the gamerule mobGriefing is set on false.
[MC-1794] White stitching on polygon edges / White lines or black dots between blocks
[MC-4577] Unable to combine enchanted books for a higher level enchant.
[MC-8193] Hopper doesn't try to place items from other slots if unable from first.
[MC-8943] Fire doesn't show on 8 layered snow and hopper
[MC-11089] Long scoreboard objective titles can be offset screen
[MC-11109] Breaking a Container with Items that is connected via a solid block with a Comparator does not update the Comparator
[MC-11217] Falling Block entities start visually falling from 1 block higher than they were placed
[MC-11236] Paintings popping out / cannot place new ones
… and a few Minecraft Realms changes

Hmmm, I wonder what has changed in the Realms of Minecraft...

I would play, but I'm still waiting on 2 mods to update.