Earlier, the appearance of a new OPPO phone with what seems to be the Dimensity 1000+ processor and 8GB of RAM gave rise to speculation that it is the Reno 5 Pro, meaning it and its vanilla sibling will launch soon. Now, a device with the same model number has appeared on TENAA, dropping large hints that this is in fact the case.
https://www.notebookcheck.net/The-alleged-OPPO-Reno-5-Pro-pops-up-on-the-TENAA-and-3C-websites.506287.0.html