The Galaxy Note9 is currently in the beta testing phase but is listed on an official Samsung Turkey site as due for Android 9 update on January 15.
Samsung delivered the Android 9 firmware to the Galaxy S9 and Galaxy S9+, earlier than expected, a few days ago. Still, Android 9 launched in August and has been available on rival devices like the OnePlus 6 since September or on the Sony Xperia XZ2 since October. Samsung has been known to be slow to update its phones to the latest version of Android. Here’s hoping One UI fixes that.