Microsoft DirectX version 10.1 is projected to be the last and final update to the DirectX 10 application programming interface (API), the head of developer relations of ATI, graphics product group of Advanced Micro Devices, recently said.

While Microsoft DirectX 9 had several shader models, including versions 2.0, 2.0a, 2.0b and 3.0, the DirectX 10 will exist in two versions, 10.0 and 10.1, said Richard Huddy, worldwide developer relations manager of AMD's graphics product group at a conference recently.