3 image editing options for Windows Phone apps

If you want advanced image editing capabilities within your app then the new Nokia Imaging SDK should give you all the power you need. But there are a couple of other options available for you too.

Telerik's RadControls include an ImageEditor.
(Remember the control suite is included in the Nokia Premium Developer Program)

Aviary also have a Windows Phone SDK. It's free for (probably) most use but there are advanced and support options you can pay for.