Apple、デベロッパー向けに macOS 12.5 beta 2 (21G5037d)、iOS 15.6 beta 2 (19G5037d)、iPadOS 15.6 beta 2 (19G5037d)、watchOS 8.7 beta 2 (19U5037d)、tvOS 15.6 beta 2 (19M5037c)を配布開始
https://developer.apple.com/jp/news/releases/