AT&T Windows Phone 7.5 Mango roll out starting September 27th

According to an internal memo sent to WPCentral the AT&T Mango roll out set to start on September 27th. The following handsets will receive the update notification on Sept 27th:

• HTC Surround (SKU 65212)
• LG Quantum (SKU 65205)
• Samsung Focus (SKU 65203) rev 1.3

Unfortunately Samsung Focus device with the rev 1.4 will have to wait until late October:

Update has not entered the AT&T SPE lab yet; however, Samsung is targeting for 10/17 lab entry and 10/31 TA