The 2019 Aprilia RSV4 1100 and RR have been announced with plenty of detail. Looks like we’ll need to have another V4 comparison sooner than later. We’re okay with that. 
Begin Press Release: 

APRILIA RSV4 1100 FACTORY AND RSV4 RR
THE EXTRAORDINARY PROJECT THAT NEVER STOPS GROWING, INTRODUCES THE FASTEST, MOST POWERFUL AND LIGHTEST RSV4 EVER – NEW 217 HP V4 ENGINE
MORE ADVANCED CHASSIS ARCHITECTURE AND BRAKES WITH REDUCED WEIGHT
THE RR VERSION, EQUIPPED WITH A 201 HP 1000 CC V4 ENGINE, IS AVAILABLE IN TWO NEW AND ATTRACTIVE GRAPHIC DESIGNS.

Aprilia RSV4 has always set the bar in terms of sportiness and performance, the best example of just what can be accomplished drawing from the valuable experience of a winning Racing Department like Aprilia’s which, in its brief history, has earned 54 world titles, seven of which in the World SBK championship. Skills honed on the track and transferred to the factory product to provide everyone with the same excitement that the motorbikes prepared by Aprilia Racing do. Unmistakable in its design lucidity and applied technology, the RSV4 is conceived around a 65° V4 engine never before seen on a factory sport bike, a framewhich is the heir to a dynasty that has won 18 titles and 143 Grand Prix races in the 250 GP class, enhanced by the most modern applied electronics systems to manage the engine and the bike’s dynamic performance. This is a true vocation of Aprilia, which was the first manufacturer...