Microsofts offical respons is this:
"DirectX is the world's leading low-level interface for gaming and graphics. Microsoft is actively investing in DirectX as the unified graphics foundation for all of our platforms, including Windows, Xbox 360, and Windows Phone. DirectX is evolving and will continue to evolve. We have absolutely no intention of stopping innovation with DirectX."
But as said above, I am not sure if this is trustworthy either. If they have plans for evolving DirectX shoudn't they be communicating things more clearly to their partners. In general communication seems to be something Microsoft has to work on.