Markus Persson (who?) aka Notch has stepped down as lead designer on Minecraft, handing the reigns over to Jens Bergensten aka Jeb, who's been working with him on the game for over a year now. Bergensten will have the final say in all decisions, but rest assured, the game is in good hands.
"I’m amazed at how much in synch we two are when it comes to how to design the game," Notch says. "And when we don’t agree, we discuss it and something much better comes out at a result. He’s truly a great person to work with, and I feel very confident handing over the leadership of Minecraft to him."
Notch will be taking a break to recuperate, then returning to work on Minecraft and a new project "refreshed and eager."