Bungie has officially confirmed recent whispers by announcing that it is being spun-off from Microsoft.
Bungie, formerly known for their high commitment to the Mac platform and then bought by Microsoft, has announced that it will become a separate and independant entity again.
The main reason appears to be a disagreement with Microsoft's multi-platform policy which consists of releasing a game first on the X-Box then on other platforms two or three years later.
Bungie has been very succesful with Halo which was supposed to be a "first on Mac" product but finally became a "first on X-Box" one. This move may mean that the game maker could renew its commitment to the Mac platform.