OxygenOS 13 stable update changelog for the OnePlus 10T:

• Aquamorphic Design
  • Adds Aquamorphic Design theme colors for enhanced visual comfort.
  • Applies the Aquamorphic Design philosophy to animations to make them natural and vivid.
  • Adds Shadow-Reflective Clock, with shadow simulating the orientation of the sun and moon.
  • Adds a Home screen world clock widget to show the time in different time zones.
  • Upgrades to Quantum Animation Engine 4.0, with a new behavior recognition feature, which recognizes complex gestures and provides optimized interactions.
  • Optimizes UI layers for a clearer and neater visual experience.
  • Applies real-world physical motions to animations to make them look more natural and intuitive.
  • Adapts responsive layouts to accommodate different screen sizes to improve readability.
  • Optimizes the widget design to make information easier and quicker to find.
  • Optimizes fonts for better readability.
  • Optimizes system icons by using the latest color scheme to make the icons easier to recognize.
  • Enriches and optimizes illustrations for features by incorporating multicultural and inclusive elements.

• Efficiency
  • Adds Meeting Assistant to enhance the meeting connecting and note-taking experience and introduces an option to make notifications more subtle and less distracting.
  • Adds large folders to the Home screen. You can now open an app in an enlarged folder with just one tap and turn pages in the folder with a swipe.
  • Adds a new type of Always-On Display that shows live information about music, ride-hailing, and food delivery. (Supports only some apps)
  • Adds media playback control, and optimizes the Quick Settings experience.
  • Adds more markup tools for screenshot editing.
  • Adds support for adding widgets to the Home screen, making information display more personalized.
  • Adds Sidebar Toolbox. You can open a floating window inside apps for smooth operation.
  • Optimizes Shelf. Swiping down on the Home screen will bring up Shelf by default. You can search content online and on your device.

• Seamless interconnection
  • Optimizes Screencast, with cast content automatically adapting to the target screen.
  • Optimizes earphone connectivity to deliver a more seamless experience.

• Personalization
  • Optimizes Bitmoji to offer more Always-On Display animations.
  • Optimizes Insight Always-On Display, with more personalized Always-On Display settings available.
  • Optimizes Portrait Silhouette Always-On Display, with more drawing tools and line colors available.

• Security & privacy
  • Adds an automatic pixelation feature for chat screenshots. The system can identify and automatically pixelate profile pictures and display names in a chat screenshot to protect your privacy.
  • Optimizes Private Safe. The Advanced Encryption Standard (AES) is used to encrypt all files for enhanced security of private files.

• Health & Digital wellbeing
  • Adds Eye comfort in Kid Space to protect children's vision.

• Gaming experience
  • Upgrades to HyperBoost GPA 4.0 to stabilize the frame rate and balance the performance and power consumption in key scenarios.