The Hellfire Gala narrative has taken place over two years now, with the event continuing to happen for the foreseeable future. It’s a moment that sees the X-Men of Krakoa host their Arakko brethren and notable heroes and villains from across the galaxy. The costumes have become fan-favorite aspects of the comic.
The Marvel Cinematic Universe is going to have to do something different with the Mutants to establish them separately from the FOX franchise. Thus, perhaps they will launch with a Hellfire Gala introducing the world to the X-Men who have been hiding all this time.