Modmyi has just posted a screenshot of a document from AT&T confirms that iPhone 4 will be only avaliable in Black for pre-order and launch tomorrow, the initial lineup will be the 3G[S] in 8GB, and the black iPhone 4 at 16GB and 32GB.
iPhone 4 pre-orders will start tomorrow but no specific time mentioned by Apple but it’s recommended that it will be available on Apple’s site around 3-4 AM PST as the iPad was from two months.
All we know that Apple has mentioned that the iPhone 4 pre-orders will start 15th this month (means today) and the release on 24th June. Also iOS 4 will be released for public on June 21st so Stay Tuned!!