I am looking for the list of assemblies in the ".NET for Windows 8" profile. This is the profile used for WIndows 8 Metro-style applications, and like Silverlight doesn't use the full .NET framework.
.NET for Metro style apps — list of namespaces
Converting your existing .NET Framework code — changes to the various APIs.
I don't see any list currently... and WinRT is expected to change alot till the official release in 2012... current information about assemblies/not available in the "Metro/WinRT Client profile":
The parts of the full profile that are available in the Metro-profile aren't delimited by some assemblies or namespaces. For example, the constructor StremReader(Stream) is present in the Metro-profile, but StreamReader(string) isn't.
Because of that, you would have to look at the documentation to find out what exactly is available and what isn't.
来源：https://stackoverflow.com/questions/7467678/list-of-assemblies-in-the-net-for-windows-8-profile