No official ones. AACS-ripped BD and HD DVD apparently seem to play okay in most of the SVN releases of the usual Linux suspects (mplayer, etc.), though some of the high-def sound formats are problematic. I suspect that after the Summer of Code, many of these issues will be resolved, but this is always pending a BD+ or an interesting AACS response.
I do not speak officially in any sense for
Intel Corp., Technology Manufacturing Group
but I do work there.