https://learn.microsoft.com/en-us/officeupdates/current-channel 未更新
追記
m_m さん お知らせありがとうございます
https://learn.microsoft.com/en-us/officeupdates/current-channel#version-2312-january-04
Version 2312: January 04
Version 2312 (Build 17126.20126)
追記終わり
https://learn.microsoft.com/en-us/officeupdates/current-channel-preview 未更新