Microsoft 365 バージョン 2511 ビルド 19426.20218

https://learn.microsoft.com/en-us/officeupdates/current-channel 未更新
https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2511-december-16

https://learn.microsoft.com/en-us/officeupdates/current-channel-preview Version 2512 に移行