JJ Abrams has recently confirmed that Rey's parents did not appear in episode vii, thus removing Luke, Leia, and Han as her parents. Though, Collin Trevorrow has also stated that Rey's parents have been seen in past episodes, with an exception of The Force Awakens.
The famous Rey Skywalker theory (which is centred around the theory that Rey is Luke's daughter) seems to have been destroyed, even though it would seem to be the most sensible backstory for Rey. What do you think?