Windows Phone Mango is now official, and intros a bevy of features, including multitasking, IE9, new Bing search tools (Vision, Voice, Music Search), text-to speech and vice-versa messaging, and deeper social networking integration just to name a few. Microsoft has also announced the addition of Acer, Fujitsu, and ZTE to their growing roster of partner phone makers. Mango is scheduled to roll out this fall, and will be available to all existing Windows Phone handsets.

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