Jason Bock has set up a site devoted to .NET Languages. Goals of the site are:[quote]To provide up-to-date news on the latest in .NET language developments. If a new language is created, or a language has a compiler for the CLR, or an article is published relating to the inner workings of a language, this site keeps you informed via an RSS feed, which you can subscribe to here.
To develop in-depth language investigations. Over time, this site will have an article for each language targeted for the .NET runtime. This will be a never-ending process, but the intent is to give you information on compiler setup and syntactic features for languages you may not be familiar with. Some languages have some very interesting features that are not easily mapped to the CLR, and learning how the compiler writers had to work these features into the assemblies yields a lot of insight into the inner workings of .NET (at least I think so!)
To list essential .NET language resources. There are a lot of solid, thorough resources, both in book and article form, for the .NET developer who has a keen interest in languages and compilers.[/quote]