AT&T continuously tries to remain the “premier” carrier for Windows Phone and, after making its Mango line-up public recently, turns out that the carrier is planning to roll-out Mango updates starting September 27.

WPCentral obtained information about the roll-out process for Mango destined for the HTC Surround, LG Quantum, Samsung Focus and HTC HD7S. The first free will reportedly get the updates starting September 27 and the HD7S will get its Mango treat mid-October. As far as the Focus is concerned, depending on your model, you’ll get the updates on September 27 (rev 1.3(Micron)) or October 31 (rev 1.4(LSI)).

Source: WPCentral