The next Skate game is still very much in development. That's about all EA had to share on this one today. They sent out a tweet that said that they're working on it. They also released a video that essentially said the same thing.
Game footage? Nope.
Concept art? Forget about it.
BTS? Yes, assuming you're talking about "behind the scenes" and not about the boy band from South Korea.
Look, I don't think anybody doubted that Skate was still being worked on. After all, it was only announced about a year ago now. But like, even a scrap of concept art would've been nice here.
