From the way the movie ends with the movie using the force to pick up the broom, it's clear there is some change in how the force works and anyone who's force sensitive enough can potentially become a full blown user. I hope they explain this shift in Episode IX, however, because it would be...
Considering the only two previous Star wars movies with red logos were Revenge of the Sith and Return of the Jedi, I expect another iconic death this time around. Luke is probably passing the mantle onto Rey permanently.