The Force Awakens Disney Infinity set apparently reveals Rey’s parenting, during the final fight against Kylo some have heard the line “Face me cousin!” said by Kylo meaning that Rey is Luke’s daughter as Kylo is Leia’s daughter. However, it’s not really easy to hear clearly what Kylo says thus it’s unclear if he really says “Cousin” or “Curses” or “Peasant.”
Pablo Hidalgo says it’s “CURSES.”
Oh, come on. He says, "Face me!" And then says "CURSES" because he's been hit. https://t.co/JyU5WJkvTM
— Pablo Hidalgo (@pablohidalgo) December 24, 2015
You can see the video here and judge by yourself:
Personally, I don’t know, if he really said “cousin” it would be weird that Disney let something as important as this come out now, they would have been careful to keep the secret until Episode VIII in 2017.