IPadOS 17
iPadOS 17 is the fifth and current major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 16, it was announced at the company's Worldwide Developers Conference (WWDC) on June 5, 2023 and was released on September 18, 2023 along with iOS 17.

iPadOS 17 drops support for the first-generation iPad Pro, and the fifth-generation iPad, making it the first iPadOS release to be exclusive to iPads with Apple Pencil support, as well as the first version of iPadOS to drop support for an iPad Pro. The first public beta was released on July 12, 2023 and the final version was released on September 18, 2023. Features

Lock screen 

 The lock screen has been redesigned to match the appearance of iOS 16 and beyond. PDF document handling 

 iPadOS can now identify PDF forms fields for quicker text input. Siri 

 Users can now simply say "Siri" instead of "Hey Siri" to activate Siri by voice activation. Health App 
 The Apple Health app is now available on iPads as well as on iPhones. Notes App 

 The Notes app now supports real time collaboration between users in PDF documents. Automatic verification codes 

 Adds support for one-time verification codes in the Mail app. Adds feature to automatically delete verification codes. Compatibility (supported devices) 
iPadOS 17 requires an A10 chip or newer, which means it drops support for iPad models with A9 and A9X chips, officially marking the end of support for non-Apple Pencil compatible iPads. This also marks the third time Apple has dropped 64-bit devices. Those using A10 or A10X SoC have limited support. Those using A12, A12X, A12Z, or A13 SoC get additional features that are unavailable on older models. Those using A14 or A15 SoC have almost full support. Those using M1 or M2 SoC get full support. iPad (6th generation)
 iPad (7th generation)
 iPad (8th generation)
 iPad (9th generation)
 iPad (10th generation)
 iPad Air (3rd generation)
 iPad Air (4th generation)
 iPad Air (5th generation)
 iPad Mini (5th generation)
 iPad Mini (6th generation)
 iPad Pro 10.5-inch
 iPad Pro 12.9-inch (2nd generation)
 iPad Pro 11-inch (1st generation)
 iPad Pro 12.9-inch (3rd generation)
 iPad Pro 11-inch (2nd generation)
 iPad Pro 12.9-inch (4th generation)
 iPad Pro 11-inch (3rd generation)
 iPad Pro 12.9-inch (5th generation)
 iPad Pro 11-inch (4th generation)
 iPad Pro 12.9-inch (6th generation)

Due to iPadOS 17 dropping support for the iPad Pro (1st generation), this marks the first time Apple has dropped support for an iPad Pro, as well as being the first version of iPadOS to drop support for an iPad with Apple Pencil support. Alongside dropping support for the iPad (5th generation), the iPad (6th generation) is the only supported device with the original 9.7-inch display and also the only iPad with 2GB of RAM to support iPadOS 17. Release history 

The first developer beta of iPadOS 17 was released on June 6, 2023. The first public release, iPadOS 17.0, was officially released on September 18, 2023. See Apple's official release notes, and official security update contents. See also 
 iOS 17
 macOS Sonoma
 tvOS 17
 watchOS 10

References 

17
IPad
Apple Inc. operating systems
Mobile operating systems
Tablet operating systems
IPadOS software
2023 software
Products introduced in 2023