After making DirectX 10 available for Windows Vista,now Microsoft has been working on getting DirectX 11 with Direct 3D 11 to existence.Earlier i had blogged that Win Xp users can make use of Warp 10 3d to make use of DirectX10 effects using a DirectX 9 based graphic card as Direct X 11 is not available for Xp Users.
Windows 7/Direct 3D 11 Technical preview is a part of DirectX SDK and mainly contains a preview of Direct2D, DirectWrite, DXGI 1.1.Most important is that its available in DirectX End-user Runtimes.Currently Windows 7/Direct3D 11 (DirectX 11) is supported only on Windows 7 and Windows Vista. I just finished downloading it and its a 514.2 MB file.
Download DirectX 11 for Windows7/Vista (SDK) - 514.2MB
Download DirectX 11 for Windows7/Vista(Web Installer)