<p>There are a lot of new features that came with the .Net Framework 3.5. Most of the posts and info on the subject list stuff about new 3.5 features and C# 3 changes at the same time. But C# 3 can be used without .Net 3.5. Does anyone know of a good post describing the changes to the language? (Besides the boring, explicit official specs at <a href="http://msdn.microsoft.com/en-us/library/bb308966.aspx" rel="noreferrer">MSDN</a> that is.)</p>

Update: I can certainly understand. 
Eric Lippert has some more indepth posts..
Check them out
.
I liked the series of posts by
scottgu
on the new language features..
Some more info here as well
http://www.danielmoth.com/Blog/2007/11/top-10-things-to-know-about-visual.html
esp the section on language features.