The 2019 Pavilion x360 15 in particular will be nearly 14 percent thinner (.94-inch to .81-inch) and 15 percent lighter (5.1 lbs to 4.3 lbs) than the 2017 Pavilion x360 15. A fingerprint reader, which has become standard on costlier models, will now be an option for the Pavilion laptops.
https://www.notebookcheck.net/Redesigned-2019-HP-Pavilion-x360-series-with-GeForce-MX250-graphics-launching-this-April.414598.0.html