Announcing the March 2015 Update of XAML Spy (version 2.7.0). This version adds full support for the Windows 10 Universal Application Platform (UAP). Apps targetting UAP can run on any Windows device, including phone, tablet, laptop, Xbox, etc. Today Windows 10 apps are developed using the Windows 10 Technical Preview tools, released by Microsoft earlier this week.
Be sure to check out the details at xamlspy.com.