The latest TV advert with Star Wars in it has appeared, and this time it's an advert for Star Wars itself -- a new US ad for The Force Awakens, which shows more Han, more Falcon, more trees, and more of a woman saying stuff about eyes.
The eye business is probably a hint that someone is someone's mum or dad or daughter or son, hence they have the same eyes. Or it might mean that the reason Luke hasn't been seen in any of the promotional material yet is that he died and his organs were transplanted into others, meaning that maybe Chewie has Luke's eyes.
But that's just fan speculation. Here's the advert: