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

iphone-os-4-now-ios-4-available-june-21-with-1500-new-featuresAt 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.

The name change bring about 1500 new features including biggies like multi-tasking, a unified inbox, app folders, data detectors and other features.

Apple is encouraging devs for iPhone 4’s new Retina Display in order to tweak their apps. iOS 4 has added Bing search engine in addition to Google and Yahoo.

iOS 4 has been declared Golden Master Candidate. Apple says iOS 4 will arrive for the iPhone 3G, 3GS, and the iPod touch on June 21. For existing iPhone and iPod touch owners it will be a free upgrade for the first time. This is the first time that a major OS update has been free for iPod touch owners.

At Apple’s Worldwide Developers Conference 2010 (WWDC) Jobs said that a Golden Master Candidate of iOS 4 would be available to developers today, with the consumer version to be made available on June 21, shortly before the iPhone 4’s release. iAds are due to be turned on a bit later, on July 1. Though some features won’t work on older models, the iPhone 3G, iPhone 3GS, and iPod touch will all be eligible to receive the upgrade for free.