Yes for some reason Samsung hasn't released update for Unlocked device. Maybe because recent update cause problem on some Carrier devices Samsung is taking time to release the update with Camera Improvements and other. As it is almost about to be end of july the Update should be out soon. So just keep Checking.
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I have the Galaxy S9 unlocked and I'm still stuck on the January patch
My condolences. Glad I got rid of the S9 for the S10 which is also not getting updates... Seeing a trend here...