The 7.8 mm bezel allows a 15.6-inch display to fit in the body of a typical 14" notebook, according to Asus.
https://www.notebookcheck.net/Asus-may-hop-on-the-slim-bezel-trend-with-rumored-VivoBook-S15.223378.0.html
Come on asus, what about Thunderbolt or at least USB 3.1 Gen.2?