From Minecraft Wiki
January 21, 2011
Beta 1.2_02 was released mainly to change where skins are downloaded from.
- Pressing ⇧ Shift+F2 generates a corrupted 1.8 GB TGA format screenshot. While the file is being generated, the game freezes and experiences major graphical distortions. This is unfinished test code, as confirmed by Notch.
- Skins are now downloaded from Amazon S3, instead of minecraft.net
- Lapis lazuli ore now drops 4 - 8 lapis lazuli per block mined (increased from 1) on single player only (Minecraft Beta servers have not been affected yet).
- Lapis lazuli ore can be found at bedrock level.
- Ink Sack has been renamed to Ink Sac.
- Beta 1.2_02 is the oldest version in the launcher to have working skins.