This comes from a very trusted source.
Ok, so Kylo Ren is NOT the villian, at least not in this film. Kylo ren is the arc of the trilogy. He is going to be what anakin should have been shown like.with a much diffrrent story and back ground of course
what you see in the trailier us kylo training as a jedi. that scene is his training of confronting the dark side of the force and then be able to move past it.But Ren truly does get seduced by what he findd behind that door. he does not turn to the dark side willingly. according to what im told as part of a jedis training they mudt confront the dark side and as with a drug each time youtoy with it it does indeed make you stronger but thatcomes at a price. you keep toyinh with it it will eventually take you over as with a strong dryg. kylo keeps toying wiyh the dsrk side as it makes him stronger and stronger. his intentions are noble. to ude this strength to battle evil and help the jedi caude.
he DOES NOT kill ham dolom as a matter of fact kylo tries to save solos life by sacrificing his own in a scene thats much like the ben affleclk bruce willis scene innarmagefdon. kylo stands up and sayd ill be the hero and do this but solo tricks him and says its not your time. thats not a quote from the scene but me exxplaini g it.
kylo ren is a character we grow to truly love and admirr and we seen this good man suddnly fall into an abysd with a final showdown with luke in episode 9.
hope that spoiler did nkt ruin anything for anyone