iPadOS 15 is the third major release of the iPadOS operating system developed by Apple for its iPad line of tablet computers. The successor to iPadOS 14, it was announced at the company's Worldwide Developers Conference (WWDC) on June 7, 2021 along with iOS 15, macOS Monterey, watchOS 8, and tvOS 15. It was released to the public on September 20, 2021. It was succeeded by iPadOS 16, which was released on October 24, 2022.