This is a post by Natasha Reaves on the Rand 3D site.
In Creo Parametric 4.0, there is support for export to 3MF but the export profile is limited. In Creo Parametric 5.0, you can import and export 3MF format files in Creo Parametric. The benefit of this enhancement is there is support in Creo Parametric for import from and export to 3MF format. This is a standard format that can be read by many 3D printers.