Apple、デベロッパ向けにiOS 26.3 beta 2 (23D5103d)、iPadOS 26.3 beta2 (23D5103d)、macOS 26.3 beta 2 (25D5101c)、macOS Sonoma 14.8.4 RC 2 (23J310)、macOS Sequoia 15.7.4 RC 2 (24G508)、tvOS 26.3 beta 2 (23K5600b)、visionOS 26.3 beta 2 (23N5602d)、watchOS 26.3 beta 2 (23S5600d)を配布開始
https://developer.apple.com/news/releases/