Samsung recently rolled out update G96xFXXSBETH2 for the Samsung Galaxy S9 and Galaxy S9 Plus. Unfortunately, while the latest software includes a security patch, owners of the 2018 flagship lineup are still waiting for One UI 2.5 to materialise.
https://www.notebookcheck.net/The-Samsung-Galaxy-S9-and-Galaxy-S9-Plus-get-security-patch-but-miss-One-UI-2-5-in-latest-firmware-update.492474.0.html