Apple、デベロッパー向けにiOS 26 beta 5 (23A5308g)、iPadOS 26 beta 5 (23A5308g)、macOS 26 beta 5 (25A5327h)、tvOS 26 beta 5 (23J5327g)、visionOS 26 beta 5 (23M5311g)、watchOS 26 beta 5 (23R5328g)配布開始
https://developer.apple.com/news/releases/