For those who are unfamiliar the BoosterPlug is a small device that plugs into your AIS sensor in the intake system that tricks the bikes computer into fueling for colder air under throttle load adding more fuel for perceived denser air (check their website for the full engineering explanation). It doesn't involve mapping or programing and improves vastly the over lean conditions all modern bikes come with as well as much better throttle response and a little kick in the pants. I've owned two on two different bikes and they were flawless, foolproof and totally reliable. Easy to install too.
So I emailed Jens in Denmark and asked when he would come out with one for the R3. He promptly wrote back to say when they got their hands on the new 2020 R3 and tore it down that "it turned out that the location of the AIT sensor was so difficult to get to that it would be impossible for 99% of our customers to install a BoosterPlug on this bike."
For that reason they will not be making a BP for the Rocket 3, which is understandable. Too bad as it would have been my first non cosmetic modification. Thought those of you who are familiar with BP or planning on one for your new Rocket 3 might want to know.