FUD Zilla had an interview with John Byrne, AMD's VP of the graphics division. Here's a snip:
4. Fudo: What does ATI think about DirectX 10.1 and its relevance?
John: I think that question would be best addressed to Microsoft. Our view is that we have a responsibility to provide support for next-generation DX specifications at the earliest possible times for our customers. Gamers want products that they can enjoy through multiple generations and we believe in delivering the industry-leading technology that can deliver on this.