Windows Phone 7 adds new social networking and productivity features all within a clean and touch-friendly interface.  Microsoft hinted that the Zune and Windows Mobile teams were working closely and you can definitely see this relationship in Series 7. The menus and interface have the same fluid animations and clean typeface as the Zune HD’s

Social and Productivity Hubs : … aggregates you friends from all of your social networks in three screens: Recent, All, What’s New. Recent will show you friends who have just updated their profiles or statuses while All will show you all of your friends…What’s new quickly aggregates status updates all into a single feed…The Pictures Hub lets you see all of the pictures on your hub, your most recent pictures and what’s new with all of your friends. The phone will pick the latest pictures you uploaded or have taken with your phone…The Office Hub lets you easily sync your documents between your phone and your PC. Office Hub comes with OneNote, for notetaking, Documents, and Sharepoint for presentation collaboration. Users will also have access to an Outlook Mail application which gives similar features, like flagging important e-mail, that you’d find on the desktop version. The first version of Windows Phone 7 Series will not include Adobe Flash — although Ballmer said he had “no objection” to Flash support…hmmm…Key note presntation of Steve Ballmer, CEO of Microsoft and Joe Belfiore, corporate vice president of Windows Phone Program Management click here

The interface has an on-screen QWERTY keyboard and will support four-point multitouch interfaces in the same way as Windows 7 for PCs. Another feature borrowed from PCs is the Web browser: it’s based on the same code as the desktop version of Internet Explorer, Belfiore said

Microsoft is also taking further control over the hardware side. All Windows Series 7 phones will ship with three hardware buttons: Home, Search, and Back. They’ll also all be capacitive touch-enabled with multitouch…Microsoft’s hardware partners include Dell, HTC, Garmin ASUS, LG, Samsung, SE, Toshiba, HP and Qualcomm. NVIDIA, which provided the Tegra chip in the Zune HD hardware, is noticeably absent. Microsoft had no comment on this matter.

Microsoft plans to have Windows phones in the market by the end of this year for the 2010 holiday season