I just saw them here:
http://elderscrollsonline.wiki.fextralife.com/Sets
More specifically the Wise Man, Quick Serpent and Immortal Warrior Set
If these are true, these are just messed up...
The medium armor's 5set option is completely lackluster compared to the other 2.
Attack and move speed? For 3 seconds? On kill?
Heck, I think it fits more on a generic 3set greens than a VR12 Purple Armors.
And the light armor is still the best...nothing new here, since it doesn't have any time limitations to trigger it. (Med needs a kill, Heavy occurs once per hour)