The Android 10 update, version FP3 3.A.0033, is 1.24GB and comes with the July security patch. Fairphone decided not to highlight some of the changes with the Android 10 update, but some users reportedly noticed a new homescreen background and option for night mode. It also comes with much lower minimum screen brightness, as well as an instantaneous shot for the camera app. Users also confirmed that the Android 10 update fixed the existing 1-minute-delay on sending SMS on the LTE network.
With that said, some users said to have experienced some problems like homescreen icons moving down a little when using gestures, overlapping with the Google Search bar at the bottom.
Note that since this is a phased roll-out, some users may not receive the update right away. However, you should be able to receive it soon.