We have more newsletters Something went wrong, please try again later. Invalid email Something went wrong, please try again later. Get the latest news from Buzz Tech straight to your inbox Innovative Chinese smartphone manufacturer OPPO – which has just unveiled two new foldable smartphones – has promised Reno 8 Pro users they will receive two major OS upgrades and four years of security updates. In a nutshell The rollout of the latest Android 13 OS upgrade, which is overlaid with the company’s latest ColorOS 13 UI, has already begun. The firm's foldables Find N2 and Find N2 Flip have…