The refreshed models have a brand new design inspired by the Spectre and Envy series. In other words, the new systems have 180-degree hinges and narrow bezels for a slimmer and sleeker look without sacrificing key ProBook features like BIOSphere Gen 4 and 4G LTE connectivity.
https://www.notebookcheck.net/HP-launches-ProBook-430-G6-440-G6-and-450-G6-with-Whiskey-Lake-U-options.370116.0.html