Minisodes featuring previous series characters. Online at the Star Trek.com site or eventually part of the extras line-up, when the Blu ray/DVD of Abramsverse Movie III is released. Little vignettes that are linked to the next film, even if separated by a universe that's just the theme. Same featured enemy or circumstance they have in common which actually hasn't changed. Not essential to the plot or anything. But like TNG Countdown or Khan comics, you get more out of the end product if and when you discover the extra. An onscreen prequel or whatever, that delves deeper into the mythology in those 5 or 10 minutes, than they manage to do in two hours at the cinema.