Although various Chinese underdogs are already selling handsets with in-display fingerprint readers, Samsung still has to release its first such handset. However, while the Galaxy S10 and Galaxy Note 10 are both expected to use this technology, recent rumors claim that next year's Galaxy A series will feature it as well.
https://www.notebookcheck.net/In-display-fingerprint-readers-coming-to-the-Galaxy-A-series-next-year.316502.0.html