Bukkit

Beta 0.60

• Added rivers
• Shorter ravine cap
• Caves no longer remove surface ice on frozen oceans

Beta 0.50

• Added ores
• Added deposits

Alpha 0.40

• Added base terrain
• Added biomes
• Added special terrain to extreme biomes
• Added occasional floating islands
• Added caverns, tunnels, and ravines

• Caves still remove some ice
• Caves also unintentionally remove sandstone
• River debug messages left active
• Will not be compiled with 1.4 Bukkit API until there is a recommended release
• If you notice any bugs, file a ticket.