No doubt, the proof is in the pudding. The rumor mill will ALWAYS be a rumor mill until something hits showroom floors, or not.
That being said, the trademark in the EU appears real and was reported by Cycle World as well... but then again that doesn't necessarily mean it's coming to market either.
https://www.cycleworld.com/story/bikes/further-confirmation-of-honda-nt1100/
That being said, I think it's sad that Honda abandoned the "Sport Touring" category after the NT700s and ST1300s, but it seemed always a difficult category to define being caught in the middle of the "sport" and "touring" worlds and sales in the US I heard weren't as great as the Deauville on the other side of the Atlantic. Maybe it's time for the category to be reborn.