In the Ice Cream Sandwich unveiling going on right now, Google has just introduced their new People app for Android 4.0. The new app is an an evolution of Contacts providing a brand new UI and a number of new ways to interact with contacts. The main screen will provide you with a simple list of all your contacts with you at the top, while swiping to the left will give you a magazine style photo grid (the same list accessible from the new phone app). Tapping one of those photos will pull up the contact details including Google+, Twitter, and LinkedIn info. Images can be pulled from Google+.
At the center is a new People app that offers richer profile information, including a large profile picture, phone numbers, addresses and accounts, status updates, events, and a new button for connecting on integrated social networks.