Microsoft has releases a CTP ( Community Technical Preview ) of Directx 11 / Direct3D 11 / DirectX 11 with Direct3D 11 which is specifically for Windows 7. This collection of SDK tools are particularly for Programmers who are looking forward to create applications or 3D games which can run on Windows 7. Download a copy of Directx 11 for yourself.
This DirectX Software Development Kit containing a Direct3D 11 Technical Preview for the Windows 7. It contains technical previews of Direct2D, DirectWrite and DXGI 1.1.
For who are not aware of it : ( Quoted from MS Directx 11 Download Page )
Direct2D is a
hardware-accelerated, immediate-mode, 2-D graphics API that provides high performance and high quality rendering for 2-D geometry, bitmaps, and text. The Direct2D API is designed to inter operate well with Direct3D and GDI.
provides support for high-quality text rendering, resolution-independent outline fonts, and full Unicode text and layout support, and much, much more.
builds on DXGI 1.0 and adds several new features including support for Direct3D 10.1 command-based remoting and support for synchronized shared surfaces.
They have also introduced XNA Math which provides developers a cross-platform native-code method of generating SIMD instructions. One of the most important one is compute shader processing techniques that can be run on a D3D10 or D3D11 GPU. It is also available as DirectX End-User Runtimes
You can download Directx 11 from this official Microsoft download page. It needs Windows Genuine validation in order to download. You can also download a run time environment for end users here ( Web Installer )
Get more details on What’s New in the Windows 7/Direct3D 11 technical preview documentation.