Although there have been some clues that Apple has been planning to introduce split-screen multitasking on the iPad, it was still something of a surprise to see the feature finally debut at WWDC. The feature will make its debut in iOS 9, which is due to officially land sometime in the fall, likely around the time we see the next generation of iPhones and iPads. Similar functionality can be found in Windows tablets and some Android tablets, so what is it like on the iPad Air 2?