And tauren.My guess is that they'll do allied races based on the ones we encounter over the course of BFA. Alliance being Kul'Tirans and Horde being Vulpera.
Allied races get the nickname subraces because they're basically more a customized form of the character models we can already play as. All of the ones announced so far use the Draenei, Blood Elf, Night Elf, Dwarf and Troll skeletons.