UK exynos here got it yesterday. Nothing fancy just a small security update. Unlike the 23 series which got a whopping 2gb plus with camera update and stuff.
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To be honest @illie87, my S21 Ultra always feels brilliant in every way to me. It is also only my second phone nowadays so I have not tested it camerawise since the update. There has been no change in battery life and day to day speed and smoothness though. It still excels here.