In the UK Samsung wouldn't comment on firmware release dates for their unbranded phone's and the Mobile Networks won't comment on dates for their branded phone's.
This is possibly the same in your country.
Isnt Oreo suspended right now due to re boot issues too ?
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.