Analysts are raising concerns as approximately half of Apple users who have not upgraded to the iPhone 16 cite the delayed rollout of AI features as a factor influencing their purchasing decisions. Notably, the postponement of enhanced Siri capabilities risks disrupting Apple's strategy to boost iPhone upgrade rates in fiscal year 2026. The refresh cycle of Apple products, a crucial metric closely monitored by investors, has taken a hit. Initially, Morgan Stanley anticipated a 0.2-year shortening of the iPhone refresh cycle in fiscal year 2026, potentially leading to shipments of 255 million units, marking an 11% year-over-year increase. However, these projections now hang in the balance due to the Siri upgrade delays.