This is the real reason that Notch is working on 0x10c. He's hoping that along the way, he'll learn enough physics to develop time travel, so he can release code before he even begins development.

I tip my hat to him for his commitment to "release early, release often."

Notch isn't the one working on this code, and it's not released, just open.

He probably established the "Early/often"policy for Mojang though.

Sure, but is this project on github because of that policy? I doubt it.