Sorry but NO not true.Because that is the day PREORDERS occur. AT&T has said preorder must take place in store.
To help our customers get iPhone 4 as quickly and efficiently as possible, AT&T retail stores nationwide can help customers place their preorder starting June 15. Consumers can preorder online at www.att.com/iphone, business customers can preorder through their AT&T sales representative or by visiting AT&Ts Premier site at https://www.wireless.att.com/business/.
source: http://www.att.com/Common/about_us/files/iphone/preorder_fact_sheet_ip4.pdf
Dave