iOS 15, iPad OS 15 and other systems were officially released today, and after the press conference, Apple quickly launched the first beta version of related systems, such as iOS 15, iPadOS 15, macOS 12 Monterey, tvOS 15, and watchOS 8.
At the press conference, the CEO Tim Cook announced that the public beta of the new system will be launched sometime in July. For most users, it's not recommended to upgrade the developer beta version, because it may leads to various problems. If you want to try the new system, you can wait for the public beta in July.
Judging from the released phone models, iOS 15 supports iPhone 6S and above models, as well as iPhone SE 1st and 2nd generations, iPad supports iPad Air 3rd and above models, iPad 5th and above models, also contains iPad mini 4 and 5.
In particular, iPadOS 15 makes it easier for users to use multiple apps at the same time. The new multi-tasking menu is displayed at the top of the app, and the user can use the split screen display or slide to the front function with a single tap.
When the user uses the split-screen display, he can quickly switch the main screen to facilitate opening the app he needs. The users also can multi-task when opening apps with multiple windows, such as Safari or Pages, and quickly preview emails.