Will it be available in 2020 models, and is it reliable
The 2020 models are probably on the Honda website. Consider the complexity (and expense) of such a transmission in regards to reliability.
Is the Honda Pilet 9 speed transmission giving problems
Look it up on the web. https://www.topspeed.com/cars/car-news/5-points-honda-had-to- address-to-make-the-2019-honda-pilot-the-best-pilot-ever-ar181705.html