I don't have mine yet either, but .......
I asked a similar question at Daytona, just prior to my bike week demo ride. They let me lean it over to an insane lean angle, and nothing touched. Of course, this was sitting still, without any of the suspension sag that would be normal while riding, since I had to keep my weight off the seat to support the bike.
As best I could tell, the rider peg feelers would be the first thing to touch, followed by the exhaust on the right side, peg feelers followed by center stand on the left. I'm not sure that the bike would still be on the tires if past the peg feelers on either side. This thing's got WAY more clearance than my current GT.
One thing that DOES concern me, is the chin fairing. Many areas near where I live use speed bumps, some severe enough to be a problem. Shortly after I got my Goldwing, three years ago, I bottomed it out (ruining the radiator overflow tank) going over one into a restaurant. I'm pretty sure the new GT has even less ground clearance. I predict the chin fairing on my will take a beating.