1. Improve the split-screen operation experience
APP column frame + multi-task management control.
Including: returning to the desktop to call other apps without affecting one of the apps; choosing to browse the page in the app bar; freely building a split-screen combination in the background.
2. Create a shortcut note
Quick Note can generate guide links according to the current browsing content (including web pages and APPs), which is convenient for quick jump browsing.
3. Compile the app
iPad OS 15 will support APP compilation through Swipe UI, support real-time preview and be compatible with MacOS Xcode.
The developed APP can also be directly shared to the APP Store, creating a more convenient development environment for developers.
The iPad OS 15 is compatible with a wide range of models
Including: all iPad Pro, iPad (eighth generation), iPad (seventh generation), iPad (sixth generation), iPad (fifth generation), iPad mini 5, iPad mini 4, iPad Air (fourth generation), iPad Air (3rd generation), iPad Air 2
Tech Elucidations 
Sean Lee 
Gelo 
Iman iman