Apple Watch models losing watchOS 27 support as Siri AI features arrive

Apple explains why watchOS 27 drops support for Apple Watch series 6, 7, 8 and Ultra - The Economic Times

Apple discontinues watchOS 27 for Series 6-8, SE(2nd), Ultra; requires Series 9+, Ultra 2+, SE 3+ for AI-powered Siri and on-device intelligence. The move signals Apple's hardware-accelerated AI focus and unified cross-device Intelligence personalization, impacting enterprise device lifecycle and refresh cycles.