Java Edition Infdev 20100617-1
From Minecraft Wiki
June 17, 2010
- Liquid flow mechanics now work better.
- Leaves now get affected by the fancy/fast option 
- Bedrock added at the bottom 5 layers of the world (Besides the bottom-most, where the infinite lava sea still generates)
- Trees no longer have logs inside of leaves, just below them.
- Coastlines are now more gradual, making oceans generally smaller.
- .jar file has a compilation time of June 17, 2010, 14:13 UTC+2.