Sources: Apple Watch Series 10 will be thinner and have bigger screens; main Siri upgrade will be part of iOS 18.4, with a dev beta in Jan. and a spring release (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg:
Sources: Apple Watch Series 10 will be thinner and have bigger screens; main Siri upgrade will be part of iOS 18.4, with a dev beta in Jan. and a spring release  —  As the Apple Watch approaches its 10th birthday, the company is preparing a big update.  Also: AirPods with cameras …