As copied from the petopia forums(my post):
Hey there, I might have some interesting stuff for you. You'll probably know most of it, but I guess dataminers haven't realized a few other things with certain models, or they just didn't bother showing it. I'm referring to the first two gifs.
The shot is a bit wonky, but it appears Blizzard has given hunters something extra. I made it a gif to show the 'bowrelease' animation, which triggers a shot of electricity.
Same for the gun. It takes a bit longer, but you'll see as long as you keep your eye on it. Personally, I think it could potentially be darn cool, and could give hunter weapons that extra needed flavor. Not sure if it's been done before, but I think it has potential!
Zandalari Bow. Pretty cool.
Mogu Spear. Nothing special, but I thought it looked pretty rad.
A Mogu Sword. WoWhead only had the icon, no idea why, but it looks pretty nice.
Archaeology Gun. Icon has been datamined, but the model hasn't been shown yet, as far as I know.
Plate wearers rejoice; the way it was named in the files, and with Blizzard hinting at it, you platies are apparently going to be able to wear the crown of the Thunder King, Lei Shen, itself.
This one boggled me, since it hasn't been used in game, as far as I know, but the new Scholomance has been available since MoP. I do remember that an icon was datamined for it, but the icon and this model were apparently never used. I hope Blizzard does so now. How long this has been in the files, I don't know. I sort of hope it's a new patch 5.2 model, so it's still possible that Blizzard will update the model.