Apple、デベロッパー向けにmacOS 12.4 beta 3 (21F5063e)、iOS 15.5 beta 3 (19F5062g)、iPadOS 15.5 beta 3 (19F5062g)、watchOS 8.6 beta 3 (19T5562f)、tvOS 15.5 beta 3 (19L5562e)を配布開始
https://developer.apple.com/jp/news/releases/