Here are the details from the AKC website:
FAST Agility Class – New Advanced TitleThe Board minutes also include approvals of titles and trial procedures for the addition of mixed breeds to compete in separate classes and earn separate titles in AKC trials beginning April of 2010. You can read the full minutes of the meeting here.
...it was voted (unanimously) to approve suggested changes to Chapter 9, AKC Regulations for Agility Trials, to add a new advanced title past the Master FAST title. The new title will be called Triple Q Excellent (TQX).
In addition, the regulations correct the Titles chart to show the right number of Qs required for the MXF and MFP tiles. Complete regulation changes are attached as Appendix B. New wording is as follows (underlined):
Triple Q Excellent = TQX
Requires the XF title. In order to acquire the Triple Q Excellent Title, a dog must
receive 10 triple qualifying scores obtained from the Excellent B Standard Agility
Class, the Excellent B Jumpers With Weaves Agility Class and the Excellent B
FAST Agility Class on the same day.
Triple Q Excellent Preferred = TQXP
Requires the XFP title. In order to acquire the Triple Q Excellent Preferred Title, a
dog must receive 10 triple qualifying scores from the Excellent B Standard
Preferred Agility Class, the Excellent B Jumpers With Weaves Preferred Agility
Class and the Excellent B FAST Preferred Agility Class on the same day.
Edit: Rumors are indicating that the TQX will be retroactive back to Jan 1, 2007, when FAST first became a title class. (unconfirmed)