People who have been upgrading their gaming system with the latest hardware might be in for a surprise as The Inquirer reports (albeit not a very reliable source) that an upcoming DirectX 10.1 update by Microsoft will not be compatible with the latest GeForce 8800 or Radeon 2900 gfx cards. While the update itself is rather insignificant, 32-bit instead of 16-bit floating point filtering, and 4xAA will become a standard, it also requires Vista SP1, and developer implementation.