If you plan on developing apps for Windows Phone 8 please be advised that you will need a Windows 8 Pro to fully take advantage of the SDK. If you have a Windows 8 non-PRO you wont be able to use the emulator. if you have Windows 7 or earlier, you cant use the SDK.

The download is available here: http://www.microsoft.com/en-us/downl....aspx?id=35471