The first round of third party apps that support iOS 4’s multitasking features are beginning to crop up at Apple’s App Store. Apple will be releasing iOS 4 as a free upgrade for iPhone and iPod touch users on June 21, marking the first time users will have third party app multitasking support without relying on hacks.
Mac Rumors noted that Dropbox for the iPhone and iPod touch now supports iOS 4’s fast app switching feature that Apple touts as a multitasking option. iOS 4’s other multitasking features include background audio, Voice over IP, background location, local notifications, task finishing, and push notifications.
The multitasking features in iOS 4 require an iPhone 3GS, iPhone 4, or iPod touch. The iPhone 3G supports a limited iOS 4 feature set, and Apple isn’t supporting the new OS on the original iPhone.