Abrams says:
Rey’s parents are not in Episode VII. So I cannot possibly in this moment tell you who they are. This is all I will say. It is something Rey thinks about too.
http://makingstarwars.net/2016/04/reys-parents-arent-even-in-star-wars-the-force-awakens/
He later clarified and said that Rey didn't discover her parents in Episode VII, which we already knew.
Plus this is the guy who insisted Benedict Cucumber totes wasn't playin Khan in nST2, no really guys I swear!!!
He's also the guy who said the story process on Into Darkness was not a good thing for him and that the hiding the ID of Kahn was a mistake.
“The truth is I think it probably would have been smarter just to say upfront ‘This is who it is.’ It was only trying to preserve the fun of it, and it might have given more time to acclimate and accept that’s what the thing was.”
http://www.slashfilm.com/star-trek-into-darkness-problems/
Somehow I doubt Disney would be interested in replicating decisions their director says didn't work and led to a Star Trek sequel making less money. Color me the skeptic.