If you were planning to pop by your local AT&T store to pick up an iPhone 4 on launch day, take the morning to get some extra sleep instead. AT&T will not have extra stock on hand for launch day as was initially thought.

The first batch of stock phones won’t be available until June 29th, when it will be sold on a first-come, first-serve basis. This is just for AT&T, though, so you might have a shot at the new handset at a Best Buy or Apple retail store.

Here’s the official word from AT&T:

• Retail purchase (no preorder): AT&T plans to have iPhone 4 inventory – available on a first-come, first-served basis while supplies last – on June 29 in its retail locations, at www.att.com, and in business sales channels. As inventory sells out, AT&T will offer the convenient option of purchasing iPhone 4 and having it delivered to a home or business or an AT&T store. As always, customers will receive an email once their order is placed, and again when it ships.

Photo from fOTOGLIF