Later this year. 
"Microsoft has announced that DirectX 11 will be releasing later this
year, delivering a range of bleeding edge new graphics tech for PC
gamers.
DirectX 11 will be completely compatible with DX10
hardware, so there will be no need to run out and upgrade your video
cards, yet again!"
"GPU as parallel processor
Microsoft
claimed at Seattle's Gamefest event this week that DirectX 11 will
feature new shader technology which "lays the groundwork for the GPU to
be used for more than just 3D graphics, so that developers can take
advantage of the graphics card as a parallel processor."
In
addition to DX11's new shader technology, gamers can also look forward
to a load of other new tech, including support for tessellation so
models will look more refined and smoother up-close; and multi-threaded
resource handling to help games better utilise multi-processor set-ups.
By Adam Hartley"
The vision must be followed by the venture. It is not enough to stare up the steps - we must step up the stairs. ~Vance Havne
Only those who will risk going too far can possibly find out how far one can go. ~T.S. Eliot