I'm still just impressed that Bounty Hunter and Smuggler weren't the first two career supplements off the presses for Edge. Don't get me wrong, I'm super pleased with the Explorer and Colonist books (Hired Guns are pretty Meh for me, but one of my players loves it) but I figured they'd rush out the "Han and Fett" career books first.
Seeing Aces come up as the first Age splat feels so natural to me.
Anyway, more on topic, I wouldn't be surprised if the next Edge book release was a more general rules supplement like Suns of Fortune. Maybe something dealing with the Core worlds? Bringing your fringe party to the civilized centers of the galaxy and making your way around the upper crust?