Advance tickets will be available to American Express Cardmembers via Ticketmaster beginning Monday, Aug 4th at 10am CDT. Tickets go on sale to the public Monday, Aug. 11 @ 9am CDT.
Ticketmaster will take you to this link:
http://www.houstontoyotacenter.com/events/detail/eagles
(VA: I know you normally deal with these dates but I have just seen them on FB & I thought I would add them).