Over seven months after its release, Windows 10 Mobile upgrade comes to Lumia 640 XL on AT&T November 7, 2016 by admin Tweet Over seven months after Microsoft released the Windows 10 Mobile update, and five months after AT&T made it available for the Lumia 640, the carrier has finally approved the upgrade for the 640 XL. Read more… Neowin Related Posts:A quick look back at the reveal of the Nokia Lumia…KB5039448: Microsoft released 1st Windows 11 24H2…Microsoft's new ad explains why you should upgrade…Non-managed Windows 10 Pro PCs will be invited to…Windows 11 on Microsoft Lumia may soon only be a…