It's Symbiotic Design: Maya To XAML Exporter
Using Autodesk | Maya with Microsoft Windows Presentation Foundation (WPF) .NET 3.5 SP1
PLEASE SEE THE URL BELOW FOR THE LATEST RELEASES:
http://www.highend3d.com/maya/downloads/tools/3d_converters/3782.html
DOWNLOAD BLEND to easily edit and view the XAML created by Maya to XAML
http://www.microsoft.com/products/expression/en/expression-blend/default.mspx