Samsung is a bit behind when it comes to the Seamless Updates, but is working really hard to introduce the feature as soon as possible.
What is Seamless Update? Well it is really simple.
The feature allows for an update to be installed on partition B while you use your phone in partition A.
After the update is complete you need to restart the device, instead of having your phone unavailable for the entirety of the process.
Google has made Seamless Updates their main focus for any phone that launches with Android 13 so it would be viable to expect the Galaxy S23 series to have the feature even before OneUI 6 arrives later next year.
We cannot wait for this great option to be included as soon as possible.