I am not too sure about what I am typing now!
To me it seems that the update from an earlier 18.?.? was performed, but could not install the matching driver.
So the Adrenalin Software is up to spiff but the actual driver is not.
Unfortunately, AMD software, may do something or may run into an problem or fail otherwise and never lets you know! (NOT EVEN AN HOUR GLASS)
For some reason the software gets a check flag and displays the update info (I had that too Any solutions to the err 1603 problem after Windows 10 update and AMD Adrenalin driver package? ). After the EDIT:
After I made a change in the registry and re-installed the software, AMD was happy and did not display the update recommendation.