We don't expect Samsung's S23 line (S23, S23 Plus, and S23 Ultra) until February or later of 2023, since the Galaxy S22 launched in February of 2022.
One item that did tip everyone off is the registration of the battery EB-BS916ABY in Safety Korea database. Unfortunately the capacity of this battery was not listed. We expect the battery to be about 5% better capacity.
There are rumors of a move to the Qualcomm Snapdragon 8 Gen 2 for all the models in the Galaxy S23 line.
And lastly, despite already having a 108MP camera sensor, there are rumors of an even larger sensor being tested.