Three years in a row, Apple used the same design for its Apple Watches and introduced only minor hardware updates whereas this year, the company finally brought some major changes. The design concept is pretty much the same but the size grew and now allows for a larger display to fit in. Now instead of the 38mm and 42mm models, Apple offers the Watch Series 4 in 40mm and 44mm flavors accommodating 35% and 32% bigger panels, respectively. Screen size compared to last generation The new watchOS now takes advantage of the bigger screen and new watch faces show more relevant...
Source: https://www.gsmarena.com/apple_watch_series_4_announced__all_with_ceramic_backs_and_ecg_monitors-news-33232.php
