iPhone 4, On Schedule?
 By now you know the drill. New iPhone hardware busts out of Apple in mid 
to late June. That's why all the rumors that Apple might release the 
fourth version of the iPhone in April were always ridiculous.But
 with iPhone OS 4.0 coming this summer, the timing is lining up 
perfectly for the fourth generation of the handset that changed 
everything.According to The Boy Genius Report, AT&T is 
blocking employee vacation time this June as has been the typical with 
previous iPhone launches. This comes, as the article says, from multiple
 sources. We called one contact with the carrier who said he hadn't 
heard anything about vacation blocking. While there's been no separate 
confirmation as yet from other sources, it's likely only a matter of 
time.Concept Image from accessoriesforiphone.comBe that as it may, the timing and the rumors seem to be 
converging in a way that seems all too familiar for those who have seen 
this kind of thing before. At least two things are certain, however, 
there will be more rumors between now and June, and we will all just 
have to wait and see. 
http://www.maclife.com/article/news/iphone_4_schedule