Using high magic drow wizards were unable to free some of the drow from the curse of the Seldarine -- Some of the drow will now be dark elves (brown-skinned, black hair, definitively not drow, and likely to lose certain drow features such as darkness, spell resistance, and light sensitivity). However, this appears to only apply to drow who are of Miyeritarian descent and do not bear the taint of Wedonai. How the corrupted drow (who will remain very drow from all appearances) will react to the sudden transformation of their brethren is still largely up to debate. Hopefully, the 100 year leap into the future will answer this. Also, this theory seems to meld well with the inherent elf worship perpetrated by WoTC.