Report: Windows Phone 7.5 Mango release date September 27; AT&T first to receive it

A report claims that Windows Phone 7.5, also known as Mango, will make its debut on September 27th and AT&T is the first carrier to receive the update.

According to emails received by WPCentral, AT&T will unleash the Mango update for the HTC Surround, the LG Quantum, and the Samsung Focus all on the September 27th date. HTC HD7S customers will have to wait a while longer, until October 17th.

Some Samsung Focus customers will have to wait until mid-October as well, depending on their hardware revision. Revision 1.4 hardware models will need to wait until the aforementioned October 17th date.