https://learn.microsoft.com/en-us/officeupdates/current-channel 明日のお楽しみ
6/12 追記
https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2405-june-11
https://learn.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
追記終わり
https://learn.microsoft.com/en-us/officeupdates/current-channel-preview Version 2406 に移行