After installing the PTR and logging in to create a level new 90, I noticed a difference in the priest outfit. It would seem like blizzard is covering up the cleavage that priest used to have. Personally I don't mind either way since it's not even the gear that I'm wearing, though I prefer the cleavage
Anyway, see for yourself. I have provided 2 screenshot
The before
The after
Which do you prefer?