Samsung recently announced the first ever public beta program for its Galaxy Watch4 and Galaxy Watch4 Classic smartwatch ranges, and today the first beta build has gone out to those who've enrolled their wearables. This is labeled One UI Watch 4.5, based on Wear OS 3.5 (up from 3.2). Enrollment to the beta program may only be available in South Korea and the US. If you want to partake, you need to go into the Samsung Members app on a Samsung phone linked to the watch, and be signed into the same Samsung account on the phone and the watch. Then if you're in an eligible region, you'll...
Source: https://www.gsmarena.com/the_first_beta_of_one_ui_45_is_now_out_for_the_samsung_galaxy_watch4-news-54533.php
