The engine is the Revolution design. The Porsche Boxster team developed it, and the V-Rod, from the ground up. In fact, some folks know the V-Rod as a Single-Track Boxster. The displacement has been reduced from the original Revolution, but that is still what it is. The difference with the Revolution is that it is not designed to run at the low rpms of the of the more traditional HD engine (Evolution or Twin-Cam), but it does bring the engine technology into the modern age more completely. It lends itself to turbo-charging quite well also. A fellow near me has a blacked out V-Rod with a turbo. It looks great and disappears in short order...frighteningly short order.
There have been rumors for years about a Revolution tourer. This may be HD's way of easing the engine into a larger market, kind of like the way coffee companies eased coffee into the tea-dominated culture of Japan: help the youth to develop a taste for it, and it will take off. We will have to see.
The styling is interesting. I wish them well, but my 100-year-anniversary Roadking will be pushed off on the barge with me when I go...
Enjoy,
Rich P