The main character, Jyn Erso, is played by the wonderful Felicity Jones.
The trailer has been out less than a day, but theories are already flying about Jyn being Rey's mother.
You have to admit, there is a resemblance there.
And there's the British accent, which Rey would have been learning to speak with for the first five years of her life.
The timeline could ~potentially~ work.
Of course, it seems a bit silly for everyone important to be related in the Star Wars universe.
And there's this valid question.
It could all just be fan theories and silliness.