Microsoft® WinFX ™ Software Development Kit for Microsoft® Pre-Release Windows Operating System Code-Named “Longhorn”, Beta 1 Web Setup

SDKはこっち。
Microsoft® WinFX ™ Software Development Kit for Microsoft® Pre-Release Windows Operating System Code-Named “Longhorn”, Beta 1 Web Setup

Quick Description
The WinFX SDK contains documentation, samples and tools designed to help you develop managed applications and libraries using WinFX, which is the set of next-generation managed APIs provided by Microsoft.