Apple、デベロッパー向けにXcode 15.3 RC (15E5202a)、iOS 17.4 RC (21E217)、iPadOS 17.4 RC (21E217)、macOS 14.4 beta 5 (23E5211a)、macOS 12.7.4 RC 4 (21H1122)、macOS 13.6.5 RC 4 (22G620)、tvOS 17.4 beta 5 (21L5225a)、visionOS 1.1 beta 4 (21O5203a)、iOS 16.7.6 RC (20H320)、iPadOS 16.7.6 RC (20H320)、iOS 15.8.2 RC (19H384)、iPadOS 15.8.2 RC (19H384)を配布開始
https://developer.apple.com/news/releases/