Screenshots showing off the new developer preview build of iPhone OS 4.0 have begun to appear online, including a number sent to iLounge by an anonymous source. Included below are shots illustrating the new multitasking and folders features, as well as the revised Photos app, universal mailbox, location services management, and more. If you have access to the developer preview and would like to share additional details, send your screenshots and info to news (at) ilounge.com.
Screenshots of iPhone OS 4 appear online

Charles Starrett
Charles Starrett was a senior editor at iLounge. He's been covering the iPod, iPhone, and iPad since their inception. He has written numerous articles and reviews, and his work has been featured in multiple publications.