DirectX 10 isn't available yet, it will arrive by early 2007 together with Window Vista, and they are already rumours that Microsoft is preparing a new addition to the specification.
We don't have any specific idea what the new things inside the new Direct X 10.1 specs may be and we are well aware that the Vole can simply change its name to Direct X 10.a or something of a similar sort. That happened recently with Direct X 9.c which was supposed to be released as Direct X 9.1, but that was more of an Nvidia versus ATI specification fight.
