The Federal Communications Commission (FCC) has approved 2 new Samsung devices, the SM-R880 and SM-R885, for sale. As they are thought to be 2 versions of the upcoming Galaxy Watch 4, this may put the flagship wearables closer to launch than ever. Furthermore, the regulator has confirmed that one of these products has 4G/LTE connectivity.
https://www.notebookcheck.net/Samsung-Galaxy-Watch-4-a-new-FCC-leak-confirms-a-4G-LTE-variant.545509.0.html