Steve said (in the keynote) that the Golden Master download should be available today.
Re:IPhone 4 is official
by jodrellblank on Monday June 07, 2010 @04:02PM
(#1411693)
They said "master candidate done today, so out soon". Also that the phone is available on the 24th, so iOS needs to be finished enough before that to be built in and shipped off on time.
But I'm guessing they wont allow us to have iOS 4 in wide circulation before iPhone 4 itself is out, so 24th or after is my guess.
As a bootstrapped developer I ran OS 4.0 through the first 3 betas, but as noted by apple do so at your own risk. I had some issues with beta 3 so Ive been waiting for an official version, before upgrading to 4.0 again. I just checked developer page and it still says the latest beta 4 well is in still in beta. I guess they release the official version around same time phone comes out?