watchOS 27 drops support for five Apple Watch models, here’s why 9to5Mac
‘It’s the most convenient way to interact with Siri’: I asked Apple’s senior watchOS team how to use the new Siri AI assistant on an Apple Watch, and why it’s not coming to so many older models TechRadar
Apple Is Leaving Its First Apple Watch Ultra in the Dust Gizmodo
Siri AI leaves older Apple Watches behind without a clear reason AppleInsider
Apple Explains Why watchOS 27 Drops Support for So Many Models MacRumors