Cool..and since you have ended the GEN argument and convinced us that the 2016 is in fact a GEN III, I guess I can plug that D-air system right into my own 2013 Gen III, right?
You like masturbating I can tell!
You can't interchange a rotor or a fork from a 2004 Gen 1 with a 2003 Gen 1. You can't interchange a Gen 2 2007 wheel with a Gen 2 2008. Does that make each different generations? No.
It's easy to find small numbers of changes, but you're glossing over the totality of changes (or lack thereof) in the 2016 as a platform. The redo points that Yamaha engineers reexamined the bike were the 2006 and 2013 model seasons. They stuck the things in wind tunnels and redid...the 2016 freshened some parts.
What's also very helpful for the FJR community of parts hounds is to have a rule-of-thumb for swapability of parts. And in no particular order the biggies as experienced over and over on this forum are things like windshield, seats, wheels, shocks, and add-on farkles. And the wheel one has caused confusion in many folks since it was a very narrow change in an otherwise static model. It's not going to be about clutches, transmissions, and computers.
BTW, I pinged Warchild and he said it's no way a Gen 4. I floated my "3.5" idea, but there was some virtual eye-rolling with that. I think he goes with the chassis/engine/interchangeability of common parts principle.
Edit: Now he's reexamining. He and I already have a $1 bet about interchangeability of the tail light assembly.
It will be interesting to hear Bounce's opinion if he decides to weigh in.