The promotion is back and is running from Jan 13 – June 30, 2010. You must register, obtain a voucher code, schedule, pay and sit for both the first and (if necessary) second retake exams before June 30, 2010. You must wait one day after taking your initial exam before you can register for your retake exam. This time is required to enter test results into the system.
Check the Prometric site for more info.