Is there a Keyhotee client for the *nix family in the works, too?
Not knowing the answer I would say: it doesn't make sense otherwise, does it?
I couldn't use Keyhotee if it was Windows/Mac only, which would mean I could not be one of those to get the new proclaimed freedom because I use a free and open operating system.

Edit:
Wouldn't using a proprietary operating system like Windows make Keyhotee obsolete, because if the NSA controls the OS they also have control over the installed applications?