Which Skywalker? Luke will be in it, not all that much though. In the trailers, you can see him with his robotic hand reach up to R2D2, kneeling with a full hood on.

***possible spoilers***

This movie especially is going to focus around the next generation of the skywalkers, both from luke and leia. This has always been the case, and it's most likely that Rey, the female main character is a daughter of one or the other, though the name has not been a part of cannon to date as a name for any of their children, it's possibly an alias as is well known to happen in Star Wars.