The Last Jedi novel opens with a new scene from the point of view of Luke Skywalker

One of the biggest complaints of The Last Jedi was how it depicted Luke in a very different way to the original trilogy. Typically the novelization of a movie follows the plot pretty religiously, but Jason Fry’s adaption includes a pretty notable prologue far removed from Rian Johnson’s movie…

“Luke Skywalker stood in the cooling sands of Tatooine, his wife by his side.”

Fry’s novel begins with a dream from Luke’s perspective, in which he views an alternative timeline where he never joined the Rebellion. Instead he stayed on Tatooine, took over his Uncle’s Moisture Farm, and married. His wife? Camie. A character who was originally in A New Hope's script, but was edited out in post-editing. Remember when Luke wanted to pick up some power converters? That was where Camie also hung out.

Camie has featured in a few non-canon texts, but this is her first appearance in a canon novel, but her appearance is still technically non-canon as it’s an alternative timeline. As Luke awakens from this sleep, he worries that the dream could have been a promise or a warning. He felt it was a sign that “things are about to change.”

What this dream has to do with Rey’s appearance? It’s unclear, but it’s certainly a sign that Rey’s purpose in the re-balancing of the Force is an important one.