as far as i know, they have not announced that this is for sure, and here is hoping they dont. giving drow tempest is beyond cheesy; the fact is that a twf scimmy using drow was UNIQUE the in the books that turbine is suddenly so eager to mimic, not the norm. most drow used longswords or shortswords, not scimmys (these were favered by, yep you guessed it, surface elves). most drow used two different sized weapons, not two of the same. changing the game to give an entire race the template that a wayward drow used is weaksauce. the stronger drow, the better drow were wizards or clerics anyway! the melee were an afterthought, an option to those that failed to meet their races preferred and honored profession. so now suddenly the natural racial choice for a drow is twf tempest with scimmy's? give me a break.
and imo carbon copying ANY class pre into a racial pre is el lamo anyway and needs to be nuetered before it goes any further. with SO many possible pre choices in DnD, why not give the races something unique? there is no rush to do this, so 'short on time' excuse. besides, it may have backfire and actually discourage a race from taking their favored class because they already have the pre as a racial.
imo racial pre's should be lesser than class pre's. like AA, its decent, although it lacks oomph on its own, but when coupled with another class pre it can be nice. take AA out of ranger and boost deepwood sniper as rangers archery pre. AA never really fit with ranger anyway, based on the arcane part, but it make great sense for elves and halfelves based on their natural arcane tendencies.