Microsoft has released a new video that shows off several of the People Hub enhancements in Windows Phone Mango. The video walks viewers through a new notification Live Tile system for contacts that can be pinned to the homescreen. After a contact has been pinned, the Live Tile will quickly alert you of a new email, message, Twitter or Facebook status, missed calls, and more. If you tap into the card, Windows Phone Mango will show you an entire history of the conversations you’ve had with that person. We’re loving what we see so far and can’t wait for the release. A recent leak has suggested we can expect it, along with new devices, in September. Hit the jump for the video.