But you needn’t look further than the Lock screen to see signs of forward movement in watchOS 4. The watch’s PIN pad has been enlarged and emboldened, making numerical input more pleasant on even the 38mm watch size. Gone is pretty much every page-based horizontal interaction, with watchOS opting instead for a Digital Crown-controlled vertical view. (Real talk: We never needed horizontal swipes on the watch, anyway.) We’re still stuck horizontally swiping between watch faces, but beyond that, the new Flashlight tool, and Workout views, it’s card-based scrolling all the way down.
-Serenity Caldwell, “WatchOS 4 Review”, iMore