Probably XPS (Score 3, Informative)

This is likely to be about XPS, the Microsoft XML Paper Specification, Microsoft's PS/PDF successor. I'd guess that Kyocera has written an XPS implementation for Linux, and wants to deploy it to support uses printing directly from XPS-enabled software. An open source XPS implementation was written within a few weeks of the release of the XPS spec -- maybe they're even just shipping that: http://www.ndesk.org/Xps

The spec is freely available, but the introductory paragraphs in the spec suggest that implementing it without licenses is not permitted.