Since the official stable version of the Android Pie with Samsung's brand new One UI on top is coming in January, the company's developers are working hard on the beta release to squash all the bugs. Today the second update to the Android Pie beta is being pushed to a number of Galaxy S9 and S9+ devices with some improvements to the front shooter.
The changelog says that since the last update, Samsung has been working on improving the front camera experience, especially when it comes to faces in backlit conditions and overall software stability improvements. However, the patch is pretty hefty at around 700MB so we assume there's more to it than meets the eye. Oh, and Google's November security patch is in there as well.