The Inquirer has posted some information about nVidia's next generation chipset codenamed NV25. Some interesting information is included... "NV25 will be technically the same card as NV20 aka Geforce 3 with an additional Vertex shader. Higher memory and chip clock may be expected but the only thing that will make a noticeable difference is the additional vertex shader. This was also easy to predict since the Xbox chip has two Vertex shaders and that chip can easily be reworked to be used in a PC."
Source - nV News