I Started Something discovered that Windows 8 might have phone calling capability
The first was inconspicuously displayed at a BUILD 2011 session on tiles and notifications. On a slide showing off all the different default layouts of tiles possible in Windows 8 with samples from built-in apps, a “Missed calls” tile lists a number of received calls.Windows 8 to include phone calling capability?
The second, during a video demo by Windows Live via WinRumors, a detailed view of a contact in the “People” app gives the ability to call the person’s mobile along with email, SMS and chat. While there’s the possibility Windows Live calling is VOIP based, the mobile number would suggest otherwise.