While we don't yet know 100% what's going on, we do get an expansion of this world and hints at what might be going on. Time travel, potential aliens, and characters you're definitely going to love. I do think that's one of the things that Brian K. Vaughan is best at. Writing a group of characters you know you're going to love, even if they're going to (probably) put you through emotional turmoil. Will definitely be picking up the next one after work today!