Depending on what country you're in, the One UI 6 update will reach your S21+ anytime within the month of November or December. As per multiple android forums, Samsung is rolling out the One UI 6 update in batches across the globe starting with Europe. I read reports that the S21 series devices were supposed to receive the update by 20 Nov, which hasn't happened yet. So perhaps Samsung is running late per schedule. I too own the same device, and located in India. Let's see when do we get the official update. I'm waiting for it too.
