Mango firmware update: HTC HD7S via AT&T

AT&T HTC HD7S has been blessed with a new Windows Phone 7.5 Mango firmware update. Microsoft already started delivering Windows Phone 7.5 updates to the HTC HD7S on AT&T. With this update, users can enjoy new features including multi-tasking, Visual Voicemail, custom ringtones, contact groups, new speech commands, messaging threads, enhanced Live Tiles, Local Scout, video sharing, improved calendar, and much more.