So, after checking out the news post which came with the most recent PTR patch, I noticed a few item icons. These specifically:
Now, if you look at the names of the icons, they're labelled WorgenDeathKnight, DraeneiPaladin, TaurenShaman, etc.
So, I had a peek in my model viewer and came across these (click for a larger preview):
Draenei Paladin Hammer:
Tauren Shaman Fist Weapon:
Worgen Death Knight 2H Sword:
Blood Elf Staff:
Gnome Axe:
Gnome Warlock Staff:
Orc Warrior Axe:
Night Elf Druid Staff:
Human Priest Staff:
Dwarf Hunter Bow:
Troll Shaman Fist Weapon:
Forsaken Rogue Dagger:
I just felt that it was worth sharing. I have no idea what the source is, but I have a feeling these racial themed weapons may perhaps be faction rewards, as the last place where I remember race themed weapons was back at the Argent Tournament, available via Champion Seals.
I'll update this post as I find the rest.