Actionable next steps toward the goal of making printing on Linux "just work".
The printing activities of the Linux Foundation revolve around a few focal points:
Patching Ghostscript 8.63 for the PDF printing workflow
In general, you should use Ghostscript 8.64 (or newer) for PDF-based printing, but if you cannot do the upgrade to the new version for some reason, you can fix the most important bugs by applying patches.
In Ghostscript 8.63 many bugs on PDF rendering where fixed, but there are still bugs breaking the PDF-based printing workflow for many users.