Was messing around as much I could on the PTR-- what with DCing every few seconds-- and bumped into three new rares. I recognized one and did some light seraching-- all three used to be Golden Lotus daily bosses.
I present: the new Baolai the Immolater, General Temuja and Gochao the Ironfist.
There's likely to be more. At the time, they have no drops and their health is much lower than a standard rare (~2 million as opposed to ~4 million)
One did drop the new Blacksmithing patterns, but that is a world drop / fluke.
Album with a few locations here.
On a lore note, the Mogu are locked in brutal combat with the new Sha in the area. General Temuja in particular seems to be amassing an army near them.
Imgur link to Mogu rares.
And here's something else I found...
Beast Lore indicates he will be tameable, but at the time he's too high level. In case image isn't high enough quality, it is a sha-styled recoloration of Skoll the Spirit Beast.
Sahn Tidehunter hasn't moved from his new 5.3 location, despite his area being now quite riddled with Sha energy.
I was unable to find Yorik Sharpeye at his usual spot, but seeing as Sahn hasn't moved, I have to assume he won't either.
Brought to you by Viri, who DCed approximately a million times to bring you this :P
---------- Post added 2013-06-13 at 08:25 AM ----------
Found another handful of rares. I'm starting to imagine they won't be "rare" in the traditional sense and more simply exist so the One Man Army achievement will still be obtainable, but of course they may eventually have an increased drop chance of, say, skyshards.
Gaohun the Soul Severer
Quid. Notably, location changed a ton.