Mailed mine today too. EAD expires on Sept 11. I hope it doesn't take longer than 3 months.
__________________
Renewal Delivered
06/17/2014
797c-----------------
06/23/2014
Biometrics letter --
06/30/2014 Done
06/30/2014
Expiration Date ---
09/11/2014
Approval Date ---
09/02/2014