Real-time rotation of the Windows Phone 8 Map Control
This article explains how to rotate the Windows Phone 8 Map Control object real-time
Introduction
Summary
References
Windows Phone Multi-Touch Manipulation http://multitouch.codeplex.com/
How to handle manipulation events for Windows Phone http://msdn.microsoft.com/en-us/library/windowsphone/develop/ff426933(v=vs.105).aspx
Building Apps for Windows Phone 8 Jump Start: (14) Maps and Location in Windows Phone 8 http://channel9.msdn.com/posts/Building-Apps-for-Windows-Phone-8-Jump-Start-14-Maps-and-Location-in-Windows-Phone-8
Windows Phone 8 Maps Control API http://msdn.microsoft.com/en-us/library/windowsphone/develop/microsoft.phone.maps.controls.map(v=vs.105).aspx

