Apple、デベロッパ向けにiOS 26.1 beta 3 (23B5064e)、iPadOS 26.1 beta 3 (23B5064e)、macOS 26.1 beta 3 (25B5062e)、macOS Sonoma 14.8.2 RC 3 (23J119)、macOS Sequoia 15.7.2 RC 3 (24G317)、tvOS 26.1 beta 3 (23J5563d)、visionOS 26.1 beta 3 (23N5033d)、watchOS 26.1 beta 3 (23S5022e)を配布開始
https://developer.apple.com/news/releases/