I wonder if Go will be similar to Scala where it arrives to solve issues with Java (or C++). I found that although Scala is a nice language in many ways, the smallness of the community prevented me from adopting it big time for most work. The same holds true for languages like F#. They're fine for special cases (likely what Google intended with Go), but won't be a general purpose replacement for more mainstream languages without some huge advance in support (like what the Rails team did for the Ruby language).
I guess it's how you look at it, but Indeed still shows very little movement over the last years with interest in Scala developers by businesses. Even compared to Go, it's very small.
Just my humble opinion..