Tom Warren at WinRumors has posted an in-depth feature review of the upcoming Windows Phone update codenamed Mango.

Check out the four-part series where dissects several upcoming features with screenshots and video demos. Read the posts for exhaustive details.

1. Windows Phone Mango ‘secret’ features demo
2. Windows Phone Mango overview: Asian language input
3. Windows Phone Mango overview: People and Messaging hub
4. Windows Phone Mango overview: Outlook, Phone & Calendar