Minecraft wiki entry for The_Update_that_Changed_the_World, associated text: 1 Mobs
1.1 New
1.2 Changed
2 Blocks
2.1 New
2.2 Changed
3 Items
3.1 New
4 Potions
4.1 New
5 Non-mob entities
5.1 New
6 Enchantments
6.1 New
7 Structures
7.1 New
8 Biomes
8.1 New
8.2 Changed
9 World types
9.1 New
10 Music tracks
10.1 New
11 Achievements
11.1 New