The last that I had read, the guaranteed drop was going to be on the end of act bosses and not any others along the way - i.e., the Skeleton King not dropping versus the Butcher definitely dropping.
I know that if you are playing on a 60 then technically you are considered to have already killed the bosses.
I'm noticing though that many players are saying they are getting one if not two drops on their first SK run. I myself got two on my first run and one on the second. Three more runs yielded nothing but blues and a yellow.
However in those three runs I've been with players who just started on the patch and they do receive a leg or two.
I'm curious if this is just a coincidental RNG event or if their is design involved? To throw my own question into the "answer" realm, I've done the Butcher four or five times now and not one leg drop.
I think with the guaranteed legendary drops, they are working properly. I say this because the kill achievements for the bosses have been reset. So you have to go around and kill all the bosses again to get the achievements. And that might mean you get a legendary on the first kill. Now you getting another on your second SK kill was probably just RNG.
Rollback Post to RevisionRollBack
I don't always burn. But when I do, I use hellfire.
I believe there was a bug on the PTR that made Skeleton King always drop a legendary if you resetted your quests, no matter of what level you were. I don't know if this bug is still active on the live server though. Also, only Skeleton King was affected by it, every other boss did not get a guaranteed legendary from this bug.