Directx 10 vs Directx 11

Hey i am just wondering if there will be any huge difference between directx 10 and 11, in a graphical way meaning better graphics, there will be some changes but i don't know what it will be, will there be any new features that will let you get more fps like the 10.1 with ati or something else thanks in advance

yea, but the software has to be written to use it and the hardware has to be able to handle it