not yet but i hope i'll get an invite after the starcraft 2 beta is done. or i hope i'll get a key from a guildie (as it happened with the starcraft 2 key). had a guildie in the alpha too, the lucky shit
got to bust my ass posting feedback to make sure i get picked for the diablo 3 beta when its out.
Unless I'm mistaken you need an active wow account to be able to recieve a beta key. Unless you have contacts that provide you a with key nontheless.. I have neither, so no beta for me. I'll wait for the release and see then if there's any point in trying it out.