Many OPPO F3 users were waiting for the next possible OTA update with the recent releases of OPPO Philippines from OPPO A71 (2017), the whole F5 series and A83 all at the latest ColorOS based on Android Nougat
Someone from an OPPO-based Facebook Group tipped that there is now a new OS update for the OPPO F3 and F3 Plus right now at OPPO service center
As I had a trip at one of their service centers in the metro, for now there is ONLY an Android Nougat update for OPPO F3. No official info yet if the said update is now available in all of their service centers around the country but you might give a try as the update is for free. The update is not yet available via an OTA update
Some reminders: you must bring in your original OPPO F3 as well as your official receipt. and warranty card.Back up your files before you proceed to the update as the data will wipe out after it. It will be helpful for the service center personnel if you bring the phone at 100% battery