https://arstechnica.com/gadgets/2021/08/samsung-announces-new-galaxy-watch-4-drops-ios-support/

Samsung just wrapped its 2021 Unpacked event, and in addition to releasing a few high-end foldable phones, the company announced new Galaxy Watches. The watches' designs have been updated moderately, as have their innards, and they will be the first smartwatches running Google and Samsung's new Wear OS.

For the first time—and perhaps as a result of the Google/Samsung collaboration—the newest Galaxy Watches will not be able to pair with iOS devices. Samsung told us that it currently has no plans to stop legacy support for previous Galaxy Watches that were compatible with iOS devices.