Apple today releases iPadOS on all compatible iPads. After moving the release date from September 30, iPadOS introduces some of the much-anticipated features to the Apple tablet line. The most obvious is to add widgets to your home screen. They can be displayed next to the usual application icons and this allows for a bit more personalization on the very static iPad home screen.
This is the first version of the iPad, which of course includes many of the features of iOS 13 that you would expect, such as dark mode, Apple map updates, photos and reminders, and even such things as support for Xbox and PS4 controllers for iPads. Apple also adds Safari, which it describes as "computer class browsing", and improves multitasking features. The updated Files app should also help you manage files and photos on your iPad.
iPadOS is now available on iPad Air 2 or newer, iPad Pro, 5th generation iPad or newer or iPad mini 4 or newer. In addition to the iPad, Apple today also releases iOS 13.1 on compatible iPhone devices, with some much needed bug fixes, automatic Siri shortcut operations, ETA sharing function in Apple Maps, and data separation for corporate devices. You can get iOS 13.1 or iPadOS in settings> general> software update. If you're still using the public beta profile, you'll need to delete it from your device to view iOS 13.1 or iPadOS.