direct3D 10 & 11

Is there a big difference (in the way of coding, ...) between the direct3d sdk 10 and 11, like "it was" between direct3d 9 and 10 ?

Thank you

No. Not at all, philosophy and D3D10 concepts stay the same! Most of the difference is that D3D11 introduces some new cool features on top of the D3D10 core:

• two new shader stages for tesselation purpose
• compute shader stage for doing GPGPU
• dynamic shader linkage
• multithreading (immediate and deferred rendering context)
• feature levels (for targeting downlevel hardware like D3D10.x and D3D9-class GPUs)
• byte address and structured buffers
• new HLSL intrinsics (popcount, bitreversal etc)
• ...

Check out the DXSDK !