Today i found a great, and very in depth article with hands on coverage of the Windows Phone 7.5 Mango made by engadget.com. There are several videos, showing of the new added features, that Mango brings to the Windows Phone.
A lot of focus has gone to integrate better view on the social medias like Facebook and Twitter. They all merge together into the big pool of contacts, and letting you create groups and interact with the people ind the group very easily.
All though this is an early review of the Mango update, it shows that this phone with take a big step forward, making it a better challenge to both iPhone and Android phone market. But i think that the Windows Phone will start off as a serious business phone, before it will begin to take parts of the consumer market.
See the full review from engadget here.