Libcloud was started by cloudkick, which rackspace acquired - for official support we need a dedicated person on staff who can maintain and answer questions from front line support, irc, etc.

That's what we mean by officially supported - that said, I have good news: we are looking into it, our pkgcloud, fog, jclouds, etc libraries are multi cloud/iaas libraries, and we believe in supporting these types of libraries (multi cloud, multi provider).

Stay tuned - we're working on it.