So Episode 8 is supposed to pick right up where 7 left off...
But that doesn't mean there won't be a time lapse shortly after the beginning. After Rey and Luke have a talk and start the movie, they might pan to Kylo Ren going to Snoke and snoke casting some dark magic over Ren's face or something... then it says "2 years later...."
So what's going to happen to Finn?
For the longest time we all thought Finn was gonna be the new Jedi (before actually seeing Ep 7). Part of me still wants him to get some force training - but it seems like that may not be the case. So out of our new heroes, if Rey is the Jedi, and Poe is the Ace Pilot, what will Finn be? The Commando?
Maybe he'll get a new Iron-Man style suit that launches Thermal Detonators and lets him fly?