Apple、デベロッパー向けに Xcode 13.3 beta (13E5086k)、macOS 12.3 beta (21E5196i)、iOS 15.4 beta (19E5209h)、iPadOS 15.4 beta (19E5209h)、watchOS 8.5 beta (19T5212h)、tvOS 15.4 beta (19L5409j)を配布開始
https://developer.apple.com/news/releases/