The latest version of DirectXTK adds support for Windows Phone 8. In fact, DirectXTK pretty much already worked on WP8, which uses the same D3D11 API as Windows 8. The only changes in this release are:
- Added project and solution files for use with the newly released Windows Phone SDK
- Updated WICTextureLoader and SaveWICTextureToFile to indicate that these are not available on Windows Phone (which does not support WIC)
- Updated the readme to match
Source