OPPO has just announced a new Android update schedule for high-end phones such as those of the new Find X3 flagship series. It involves major software upgrades over the first three years post-launch, as opposed to two under the previous scheme. Therefore, not only will the OEM's latest premium phones get Android 12, they will also definitely get this OS' successor as well.
https://www.notebookcheck.net/The-OPPO-Find-X3-Pro-will-get-Android-13-as-well-as-12.538089.0.html