I didn't see any mentions of Go yet.
Progress is kind of slow at the moment, but is proceeding more or less steadily. It's also the newest language binding, so it will of course not be as feature complete as, say, the Python or Node bindings.
BTW, Mark Internate is an old friend. Tell him I said Hi.
Just a head's up though -- I'm considering migrating the repository to the github.com/rackerlabs organization within a week or so, for consistency with other, more officially supported, API bindings.
(I vote for Go.)
Please see the project page at github.com/racker/gorax. Thanks!