Last week, Samsung had successfully delivered Androidβs latest December security patch to the Galaxy S23 series in the US. This week, it goes to older models with Galaxy Z Fold 2, Galaxy A53 & Galaxy A54 in One UI 6. These all devices have received December patch in the US.
This is regular security patch without any new feature. You can expect some bug fixes and other improvements in the existing apps & services. All the other countries will get this firmware in this week or next week.