Star Wars Episode 7 Trailer 3 and Tickets

Fricking unstable lightsaber man! Fallen Jedi and all that.

It also mentions that his fighting form is unknown to the galaxy.

 Spoiler

If that is official info, it is of interesting note the mention of more Snoke apprentices.

Also, it is never mentioned in the movie Kylo Ren's intentions as being a dark side user. Here it clearly says how he believes it's his birth right.
Good stuff, if true.

spoiler is never said, but considering his obsession, i think it was heavily implied.