That's still 4 elven races currently, or an additional half-elf variant depending on how you choose to slice it. Also...I kinda would say dragonborn replace kobolds. The draconic affiliated lizardfolk themes are all there, what is missing, the trap affinity? Size difference? Being an enemy/underdog?
Either way, I don't have anything conceptually against either race, but wizards has limited time and energy to devote to this, given that it's not even a true player's resource. That's really the root of my complaint, that I wish they would opt to cover as many different themes or variations on fantasy races as they can, rather than give precious to space to ones that I personally think are redundant.
It is a True player resource, for playable races it has 12 detailed races and large amount of quickly done races, it will have new shapes for wildshape, new Beasts to have as companions, new creatures for summoning spells and True Polymorph, likely new setting lore.
And its a done deal, they're already committed to these races. Kbolds, Kenkus, ect..., are really popular and likely already done, except maybe for the art, so most of the engergy has been expended.
And given the volume of races I think the only D&D fantasy races that won't be covered, are setting specific ones that don't appear in FR, like Warforged, which would come out with Eberron.
Even with the races we know about there is a wide area explored.
Firbolgs (giants), Kenku (land based, tricky, crow people), Tritons (Aquatic race), Aasimar (Celestial race), Tabaxi (Jaguar/Leopard/Cat Folk and a fast race), Orcs (War like barbarian race), Goblins (small, sneaky race), with say 5 more detailed races. And really weird stuff will be likely on the quick race list.