Updated Log
[Visuals]
Brand new borderless design makes visuals more attractive and operation more efficient.
Added OPPO Sans as the default font. The new font delivers a refreshing feel and fits well with OPPO's pursuit of blending beauty and technology.
[Smart Sidebar]
Optimised user interfaces and improved one-handed operation.
Drag an app out of Smart Sidebar to open it in Split-screen mode.
Optimised the Floating Window feature for more apps.
Added a bubble: A bubble is displayed when you open an app in a floating window from the Smart Sidebar. Tap the bubble to collapse and open the app.
[Screenshot]
Optimised 3-Finger Screenshot: Use 3 fingers to touch and hold the screen and swipe your fingers to adjust the screenshot size. Use 3 fingers to touch and hold the screen and swipe your fingers outwards to capture a long screenshot. 
Added screenshot settings: You can adjust the position of the screenshot preview floating window and set the screenshot sound.
Optimised screenshot preview floating window: After taking a screenshot, drag it up and release to share it, or drag it down and release to take a long screenshot.
[Navigation Gestures 3.0]
Added a switch for the following gesture: Swipe in from either side and stop to go to the previous app.
Optimised gestures: All gestures are supported in landscape mode.
You can now enable vibration for when you use Swipe gestures from both sides to go back to the previous screen.
Optimised Google Assistant: When Swipe-up gestures or Swipe from both sides to go back gestures are selected, you can call up Google Assistant by swiping inwards from either bottom corner of the screen.
[System]
Added Dark Mode: Protects your eyes while reducing power consumption.
Added Focus Mode: Shields you from outside distractions when you are learning or working.
Added all new charging animation.
Added the Wireless Printing feature. Images and PDF files can now be printed from your phone.
Optimised the Quick Settings user interface for easier one-handed operation.
Swipe left or right to ignore banner notifications.
Added a pause function for screen recording.
Added a floating window and settings for screen recording.
New sounds added for file deletion, calculator key touches, and compass pointer.
Optimised system pre-loaded ringtones.
Added TalkBack floating prompts for Accessibility.
Colour Accessibility Mode added to improve user experience for visually impaired users.
New management function for recent tasks: You can view memory information about recent tasks and lock apps.
[Games]
Optimised visual interaction for Game Space.
Optimised the startup animation for Game Space.
[Home Screen]
More live wallpapers.
Added Art+ static wallpapers.
Customise whether to open Global Search or the notification drawer when swiping down on the Home screen.
Customise the size, shape, and style of app icons on the Home screen.
Optimised the graphic design of password unlock to facilitate one-handed operations.
Supported live wallpapers on the Lock screen.
Added a simple Home screen mode, featuring larger fonts and icons and a clearer layout.
[Security]
Connect your phone to Wi-Fi networks using a random MAC address to avoid targeted ads and protect your privacy.
[Tools]
Added the trim feature in Recordings.
Added the Weather (dynamic) ringtone, which automatically adapts to the current weather.
Added weather-adaptive animations in Weather.
[Camera]
Optimised the Camera UI for a better user experience.
Optimised the Timer UI and sound.
[Photos]
Optimised the Album UI for a clear hierarchy and quick lookup of photos.
Added Album Recommendations that recognises more than 80 different scenes.
[Communications]
OPPO Share now supports sharing files with vivo and Xiaomi devices.
Optimised the Contacts UI for a more efficient experience.
[Settings]
Search Settings now supports fuzzy match and contains a search history.
[Applications]
Added DocVault, an app for easy management and use of your digital ID cards (available only on phones sold in India).