CUPS is the popular open-source printing system that many projects have used successfully as a core, for desktop printing and as the basis of dedicated print servers. Reader donadony
writes with word that Apple "has chosen to abandon certain Linux exclusive features, [while] continuing with popular Mac OS X features. The changeover is being attempted by Apple to set new printing standards that will not require 'drivers' in the future."
However, as this message from Tim Waugh at Red Hat
points out, all is not lost: "Where they are of
use for the Linux environment, those orphaned features will continue to
be maintained at OpenPrinting