I think there is a strong probability that the frames on the Touring Models, including the Trikes, will change in 2019 or 2020.
With the frame change to the Softails for 2018, it does not make any sense for HD to Not carry that "common core" frame over to the Touring line.
I think 2019 is more likely than 2020. But either way, I have decided what I am going to do.
I'm going to keep my 2014 TG, waiting to see if the frame change occurs on the 2019's. If it does, I will sell the '14 and get a '19.
If there is no frame change in 2019, I will add one year to my extended warranty on the '14 and wait to see if there is a frame change in '20. If there is, that is when I'll get a '20.
If not, then I will get a leftover '19 at that time. By then the 2014 will probably have well over 100k miles on it.
In the meantime, it is myself, Mary and the '14 for upcoming trips!
Kevin