There was a minor packaging error in the 3.9.0 source tarball which would make bitfury code not fully compile support for bi*fury devices unless drillbit was enabled as well, so I've uploaded updated tarballs with only that one change, they will be tagged 3.9.0-1. There is no other change in this code so you do not need to update if everything's working for you.

I have been working on writing a nanofury driver (using direct USB communications as per our USB device driver model) but it is proving rather challenging so it appears that it will be some time before nanofury support is in mainline cgminer at this stage.