Microsoft's Photosynth is a neat set of photography tools for creating panoramic images. There is a desktop application as well as an iPhone app but, oddly, Microsoft hasn't really rushed Photosynth out for the Windows Phone. Fortunately, that should change with the Mango update.
According to David Gedye, Photosynth Group Program Manager:
"Yes – we’re working on a version for Windows 7 Phone now. You can definitely communicate this info to your members. We cant make any commitment about ship date though, except to say that it is our top priority."
Gedye explained that the original release of Windows Phone didn't have the video mode API's that allow Photosynth to provided the capture experience. The Mango update should change that and the Photosynth team is working to get a Windows Phone app ready. At the time only iOS had the necessary video components, hence the iPhone getting the mobile version first.
In looking at the iPhone version, as well as the desktop version, Photosynth should be a very nice addition to the Windows Phone app family.