How can I convert a UV map into a mesh? Blender 2.7 is going to support sewing. It makes sense to be able to unwrap an object (clothes) in to a 2d pattern, orientate the 2d panels around the body and then 'sew' it back together to simulate how the pattern fits.

Is it currently possible to convert a UV map in to a mesh?
Currently there aren't tools to do this right at the moment, but this is a fairly simple operation. Internally the exporting UV's layout to PNG does this. its just hidden from the user and the mesh is removed immediately afterwards.