I bought the Legendary Races: Wyrmtouched PDF yesterday afternoon, and I found the concept behind the race to be fairly interesting. If two Draconic-Blooded sorcerers could give birth to a Wyrmtouched, then quite a number of races could arise in much the same way from the other Sorcerous Bloodlines in Pathfinder. This could include versions of the Aasimar (Celestial Bloodline), the Tiefling (the various fiendish bloodlines, the Fetchling (Shadow Bloodline) and the Genie-kin (Djinn, Efreet, Shaitan and Marid Bloodlines). I think something other than the Genie-kin would arise from the Elemental Bloodline.
So any chance that the next Legendary Race would be like the Wyrmtouched but come from a different Sorcerous Bloodline? *curious* My vote is for something that blurs the line between flesh and blood beings and elementals.