The first mini-trailer to Star Wars Episode VIII has been released. It doesn't show much, it just shows what happened immediately after the credit rolled at the end of Star Wars - The Force Awakens after Rey finally catches up Luke Skywalker on the planet of Ahch-To. The name of the planet has also just been released. Unlike the previous films where the next in the series is set after a breather period, it looks like this one will set immediately after the events of Force Awakens.
All the leading characters from the previous four films (IV, V, VI, VII) are back with the exception of Han Solo who was killed by his son at the end of the previous film (Ben Solo/Kylo Ren). There is no flash back scenes with Han Solo expected within the film. Chewbacca will be back most likely, now partnering up with Rey.
Given how things have happened so far, a main character being killed off in the first film of each trilogy (Obi-Wan Kenobi, Qui-Gon Jinn and then Han Solo), how a Skywalker lost his hand in the middle film (Anakin Skywalker and Luke Skywalker), you could almost guess what will happen in the middle, another character loosing his hand. If Rey is the child of Skywalker then she's got something not to look forward to. It'd be disappointing if that did happen.