Microsoft has released a PDF version of a new poster, showing the .NET Framework 3.5 commonly used types.
The amount of LINQ specific data here is rather limited, and a bit spread out across the poster, rather than centralized in one place:
- Web Controls
Nevertheless, there is a good deal of general information squeezed into this poster, and it is probably worth spending a few minutes looking it over. Particular useful are the little icons showing which classes made it into the the Compact Framework, and which are planned for inclusion in Silverlight.