Some answers to your questions, in no particular order....
Cans looked the same but with the redesiged sub frame / pass foot peg redesign, I'm not sure if the can mounting bolts have been relocated, but the size seemed the same to me, never noticed the difference.
Not sure either on retrofit of the handlebars, the mounting detils are covered up.
The seats will not retrofit between years. We took a close look at that area in detail. The new passenger seat is the piece that unlocks when you insert the key, not the front section. After you remove the rear , there is a " trigger " release under the front seat that need depressed in order to unlatch the front section. The gas tank has two small receivers ( think like a towing receiver hitch in a bumper ). The plastic sub frame that the seat sits on top of, has a high and low postition. A tab on the front of the seat slides into the receiver on the tank, depending on the height chosen, and locks in on the rear to a new catch system
According to the rep the body panels will not interchange, so who's going to be first to weld new mounting tabs on the frame??
Sorry TurboDave, I did not talk to the rep about the new trans. I knew it wasn't for my style of riding / home location. I know MM2 did so he'll post up when he gets home late today.
The " plug " at the old hazard swith location may not be there when the bike is put into production. This was a preproduction demo model. I was hoping they'd at least disconnect the starter and leave the other power available so we could play with the shield / glove box etc. , but the bike was completly depowered. The glove box was locked up so no pics of the new power port in there.
Whether there's enough changes to trade up as some asked, that's a personal choice, but after seeing the improvements " standing still " it looks pretty damn good!! The fairing redesign seems to have opened up a lot of area for increased air flow, I think this may help rider heat as well as letting the motor cool / flow better. It will be interesting to see how the heat reports / bike running temperature are perceived with the new bike, all of the current heat mods seem to seal or redirect air, Yamaha has gone the other way and opened it all up more.
Also I forgot to mention that in the pic of the dash, you can see two round black knobs that are for headlight adjustment, and notice the nose fairing has two notches in it. I assume that is for when the shield is all the way up, it should be closer to the rider now ?