Today, February 27,th 2011, the 787 flight test fleet surpassed another milestone by exceeding 3,000 flight test hours flown. It appears that ZA005 was the aircraft that put Boeing over the top when it flew a 6 hour and 40 minute test flight out of Boeing Field. It also appears that the GEnx/787 flight testing has exceed 600 flight test hours during the same flight.
Additionally, the Rolls Royce powered 787 test fleet surpassed 2,400 flight hours flown when ZA004 flew a 5 hour mission yesterday (Feb. 26th)
I expect that there would be a confirmation of this milestone by Boeing sometime tomorrow.