It will be interesting to see if the Void Elves continue to be a noticeable addition or get forgotten about.
There is a gathering of mixed Void Elf and High Elf npcs gathering at times in places in the Mage Quarter of Stormwind.
When I first noticed it I had been concerned that Blizz was going to over the course of the patches this expansion slowly transform all the High Elves into Void Elves but I haven’t seen anything of the sort going on. It seems to be a random mix of 3-4 Elves split between Void and High that changes periodically back and forth.