The OnePlus 7 and 7 Pro have only been official since May 14, 2019. Despite this, the OEM has already rolled a new Android Q beta out for the phones. The build may offer insights as to what software updates of the future will be like on the 2 devices, but not much else at this point.
https://www.notebookcheck.net/OnePlus-releases-Android-Q-Beta-for-the-7-and-7-Pro.421278.0.html