Oppo is expected to launch the Find X9 Ultra as a premium flagship with a distinctive dual-tone design and high-end materials, according to a new report. The phone may feature a retro-inspired finish, a quad rear camera setup led by a 200-megapixel main sensor, and advanced telephoto zoom capabilities. It is expected to feature a 6.82-inch 2K AMOLED display, a Snapdra…