The version numbers for android are all listed below the downloads under "Install instructions".
Part 2 goes through 0.12, while part 3 starts at 0.13 (Sat, Sept 29th). For anyone else curious, Part 1 is through 0.8 (The 21st day) and part 2 covers 0.9-0.12 (Sat, Sept 22nd through Fri, Sept 28th).