Kuo: the Apple Watch Series 10 will be thinner and its screen will grow from 41mm to 45mm and 45mm to 49mm; Apple will use 3D printing to make some components (Tim Hardwick/MacRumors)

https://www.macrumors.com/2024/06/17/kuo-apple-watch-series-10-larger-screen-thinner/
http://www.techmeme.com/240617/p8#a240617p8