FUD Zilla claims DirectX 11 will arrive in early 2009 - or possible even in late 2008.
This means that it will move rather quickly from DirectX 10 and 10.1, but it might take some time for hardware to go the same way.
We still don’t know many things about the new API, but at least we have the rough plan that it is coming. It is clear that 2009 will be the year or DirectX 11, and the way the market works we should see some good DirectX 11 games by 2010.