iPhone OS 4 Now iOS 4, Available June 21 With 1500 New Features

At today’s WWDC keynote event Steve Jobs announced that the operating system formerly known as iPhone OS will now be known as iOS with the bump to version 4. iOS is a name owned by Cisco.

WWDC 2010: Steve Jobs adds Video Call & Editing to iPhone 4

Rumors turned into true. Apple’s CEO Steve Jobs not only unveiled iphone 4 but also adds one more thing to it at Apple’s Worldwide Developer Conference 2010.