No official date as of now but, at the keynote, it was said in Summer.
The iPhone OS 3.0 got released on June 17, 2009.
iPhone OS version 4.0 is scheduled for final distribution via iTunes in June 2010 for iPod Touch and iPhone, and Fall 2010 for iPad. No final dates have been determined, so these estimates may change as the final release gets closer.
The exact release date is 17th June 2009. To find out more go to apple.com/iPhone and you'll see info about iPhone OS 3.0 and the new iPhone 3G S. Which is the new iPhone with voice recognition and video recording.
iPhone OS. No seriously it's actually called iPhone OS.
according to IGN.com the iPhone OS 4 comes out in June 22 ur welcome
No, it was only released for the Iphone OS. There are plans to have a release on PC in the future.
The OS 8 is for the iPhone 4. The iPhone 4 is a really popular phone.
The iPhone, along with the iPod Touch and iPad, run iOS, previously called iPhone OS.
The iPhone OS 4.0 will be available to iPhone and iPod Touch owners for download through iTunes during the summer of 2010.
Yes.
If your a developer you can get it now. But for everyone else it ships this summer as a free update for iphone and iphone 3G users. the iTouch update will cost $9.95 and will come out at the same time.
not sure try it