For whatever anecdote is worth, I know of two groups of kids (in the 8-14 age range) who've picked up the game recently. Among 8 players total, they have 2 Eladrin, 3 Dragonborn, a Tiefling, a Halfling, and a human. Everybody under 18 I've shown the PHB to has totally grooved on the Dragonborn, and the Tiefling gets love from teenage boys and a certain sort of girl. Eladrin get the "magic elfy" people, and regular elves get "Legolas". As far as I can tell, the core demographic that made D&D briefly mainstream in the 80s LOVES the "far out" stuff.
Again, anecdote only. But if D&D is cool again, I'm happy to see it be a little bit different than it was when *I* was a wonderstruck 12-year-old looking at that blue box with the cheesy red dragon on the cover.