Originally Posted by Dagoro
No overt signs of Haki yet. Until Law bypasses Smoker's dispersion, or displays precog we can't confirm Haki. It would be ridiculous for him not to have it though.
True even back in the day BB could feel Luffy's increase in Haki power/ability, I don't see why some of the Supernovas wouldn't have that abililty it comes 3 ways so a version for each of them or at least most of them wouldn't shock me at all.