Verizon Wireless customers in the 79 markets that AT&T acquired are being alerted that they will soon be AT&T customers. A welcoming letter detailing the initial phase of the transition is being sent out to this lucky group of Verizon Wireless subscribers and one of our readers was kind enough to share the letter with us. The letter confirms that AT&T is activating its service on a market-by-market basis and is working on integrating the two disparate networks. Once integration is complete, AT&T will transition customers over to its service, plans, and handsets shortly thereafter. In a bit of irony, these Big Red customers will be the first to have an iPhone 4. Any Verizon Wireless customers a bit jealous?