Engadget has confirmed that AT&T will allow iPad 2 users who purchased an unlimited data plan for the original iPad last year to continue using their plan with the iPad 2. When the iPad Wi-Fi + 3G first launched in the U.S. last spring, the carrier initially offered an unlimited data option for $30/month, however a few weeks later the carrier revised its plan structure replacing the unlimited iPad data plan with a $25 for 2GB per month option.…
