Verizon is now sending more information out about the iPhone launch. Verizon is offering existing customers of ?corporate accounts a chance to buy the Verizon iPhone on February 3rd, a week before the general public.

Based on sources, Verizon will begin pre-order sales at 3am Eastern on February 3rd.

Please note a few things about pre-ordering the phone if you are existing customer of Verizon Wireless.

- Make sure you have your My Verizon self-serve account set-up online. Orders can only be placed through your my Verizon account. You can register/setup your account at… myaccount.verizonwireless.com

- On February 3rd at 3am EST, Verizon Wireless will allow current customers to order upgrades or new lines to their accounts through your My Verizon online account (make sure you have registered before the 3rd).

Verizon also states pre-sale inventory is limited, so when that inventory is depleted, customers will have to wait until the February 10th which is the public launch date.

Verizon is also allowing some existing AT&T iPhone customers to trade-in their iPhone for credit when buying a new Verizon iPhone 4. We are not sure if this will be offered to non-corporate accounts, but the trade-in price list is as follows:

iPhone 2G - 16GB: $60
iPhone 3G - 16GB: $105
iPhone 3Gs 32GB: $160
iPhone 4- 16GB: $280
iPhone 4 - 32GB: $360

Customers, of course, could do better selling their iPhones themselves, though this could provide a relatively low-hassle way to switch carriers. (trade-in prices are subject to change.) New Verizon iPhones will be shipped 2 day FedEx by default or optionally next day air.