depends how far Rey gets in her training. going by the past, we should get a movie and a half of her training days before Luke dies. But remember just because the jedi are nearly gone doesn't mean the end of the force users. there should still be quite a few sith around somewhere. they may not be trained well. but the do exist
I'd bet my money on this. The article states that Carrie Fisher shot all her scenes before dying, so my guess is that the last Jedi is Luke. Until Rey finishes her training, of course.
But.. "there can only be two Sith.. a master... and an apprentice.."
....if Darth Bane's rule of two is adhered to following the events on Yavin, yeah. But as far as we know, Vader and Palps were the only two TRUE Sith in the galaxy. With the master being killed and the apprentice being redeemed, the Sith would be all but extinct. UNLESS an ancient evil, a TRUE Sith lord from the early years of the republic, has been in hiding on Koriban or something since the rise of the Empire. Keep in mind as well that the Knights of Ren appear to be force wielders of the dark side, but that doesn't necessarily make them inherently Sith. Basically what I'm saying is that I hope we get to see something like this:
I've been the least Jedi since I discovered beer.
Return of the Jedi didn't bring a multitude of Jedi's. It was just the one. The Last Jedi would be in reference to Luke. Keyword being 'last', means Luke will probably be a title character throughout the film as he trains Rey and possibly that other guy since they seem to have hinted at him possibly being a Jedi.
