<p>Are there any ports to WPF of Silverlight's MultiScaleImage (aka DeepZoom)?  Have Microsoft road-mapped this at all for WPF?</p>

<p>I want to move from WinForms to WPF and require something like DeepZoom, using Silverlight isn't an option.</p>

At the moment there is no port. However, DeepZoom is based on the technology found in the "World Wide Telescope" and the "Microsoft Photo Synth", so they have desktop versions of the technology running. I guess it would be safe to assume that Microsoft will be releasing a multi scale image control for WPF soon. If you just want the "panning and zooming", and don't care about the efficient breakdown of high resolution images you can certainly achieve the same effects in WPF. This post is
one example on how to do zoom and pan
.