The following contains potential SPOILERS for Star Wars: The Last Jedi.
Star Wars has been very guarded about revealing spoilers in the lead up to Star Wars: The Last Jedi, and thus far they've been very successful. However, all it takes is one slip from a person in the know to change everything. Adam Driver appears to have revealed some significant information about Daisy Ridley's character of Rey in a recent interview. Though we're not entirely sure that's what's happened here. Driver was discussing the evolution of his character of Kylo Ren when he said...
It's that last sentence that's the key. It's obvious why Adam Driver appears to be talking about the character of Rey here. She's the one with a hidden identity, that we know, and she's female, so the fact is she could be a princess. If he is talking about Rey, this does reveal some absolutely massive information. The fact that Rey is apparently a princess is interesting, though not particularly useful. Most of the royalty we've met in the Star Wars universe is gone. Alderaan is destroyed and Naboo's royal house does run via bloodline, so it's likely this would be royalty of some new planet in the saga. However, what's more interesting is that the statement implies that the princess in question is actively hiding who she is. If Driver is talking about Rey, then he's saying that she knows who she is. She may not know why nobody came back for her, but she may actually know why she was hidden in the first place.
However, Star Wars: The Force Awakens seems to clearly indicate that Rey doesn't remember her own origins, which makes us wonder if Adam Driver is actually talking about somebody else. The GQ interview doesn't specify exactly what question Driver was responding to, nor does it follow up to clarify the subject of the statement. It's possible that Driver isn't talking about Rey at all, but an entirely different character. If so, who could it be? There is one significant candidate.
The character of Rose, played by Kelly Marie Tran in Star Wars: The Last Jedi, has always seemed a little off. We know very little about the character, other than she works in maintenance for the Resistance. "Resistance Mechanic #1" has always seemed like a strange place to find a new major character. We've never gotten to know characters like that within the primary saga before. Is it possible that there's more to Rose than is being let on? Perhaps she's the princess who is hiding her identity. Resistance maintenance seems like a pretty good place to get yourself lost if you're going to go into hiding. Perhaps that's why this particular maintenance worker is important.
It does seem like Adam Driver's statement is a significant spoiler, we're just not 100% sure what it is that it's spoiling. We'll know for certain when Star Wars: The Last Jedi hits screens December 15.