http://www.infoworld.com/d/application-development/microsoft-prepares-developers-windows-phone-8-sdk-launch-202304
In a blog post on Wednesday, Microsoft announced that they started accepting requests for access to the Windows Phone SDK 8.0 Developer Preview program. Developer have to apply by Sept. 17 at 5 pm PDT. If accepted, developer will be directed how to “download the Windows Phone 8 SDK and get support.” Microsoft’s hope is to round up the developers of popular applications to optimize those apps for the Windows Phone 8, a key to the success of the new operating system.