Blizzard is apparently captivated by Griftah, the snake-oil sales Troll in Shattrath, because they've changed him yet again in 2.3. He's back inside the city, so apparently that investigation the Peacekeeper was doing dug up nothing. And he's gotten a bigger role in the game than ever-- not only does he now have a quest for you to do (that leads into Zul'Aman), but apparently one of the ingredients for the Engineering mount, a hula doll (don't ask), is sold by him for a whopping 100g.
I like Griftah, and I'm glad that he's back-- that jerk Scryer going through his things was none too kind to the shifty Troll while he was gone. And my guess is that Griftah isn't done being vindicated-- I think it would be really funny if, in an upcoming patch, Blizzard changed that old 30g necklace Griftah sold to have a really cool proc or effect put on it, sort of a reward for those who've stood by Griftah the whole time.
On the other hand, I hope this "guinea pig" of progressive content is really helping Blizzard learn how to do it-- seems a little strange to waste updates like this on just one Troll when we could be seeing real progressive content elsewhere in the game. Still, every little step counts-- it's just another update in the whole saga of Griftah the Troll.