The R1200RT gets more power and some other updates for 2019. Honestly, I thought the current 125hp LC Boxer engine had plenty of poke. The new RT looks really tempting. 150 or so hp, lots of low and mid range torque, and lighter than a C14.
https://www.motorcyclenews.com/news/new-bikes/2018/bmw-r1200rt-tourer-motorcycle/
https://www.motorcyclenews.com/news/new-bikes/2018/bmw-r1200rt-tourer-motorcycle/