Attention, BUL8 (January patch) has been out for a week now, I haven't updated the original post yet because I'm waiting for XTC to receive the OTA and capture the changelog firsthand.
However, for anyone who wants to get the update right now, you can do so by downloading EUY from Frija:
Model
SM-F926B
Model name Galaxy Z Fold3
Country
Multi-CSC OXM
Version Android 12
Changelist 23064456
Build date Mon, 27 Dec 2021 09:50:55 +0000
Security Patch Level January 1, 2022
Multi-CSC
OXM
PDA F926BXXS1BUL8
CSC F926BOXM1BUL4
If you have a different carrier code, be sure to use HOME_CSC if you don't want your carrier code be changed to EUY, same goes if you don't want a full factory reset.
I will update the original posts once I receive the OTA.