Hi, Although the latest version of CUPS is 1.5.0, development is continuing apace on 1.6. There are some important changes coming in 1.6 which deserve to be pointed out. Some time ago CUPS became an Apple project, and now some of the features that are not relevant to Mac OS are being orphaned. Where they are of use for the Linux environment, those orphaned features will continue to be maintained at OpenPrinting (http://www.openprinting.org/) as a separate project. CUPS Browsing ------------- One of the notable things that will be disappearing is CUPS Browsing. This is currently the primary mechanism for CUPS-to-CUPS printer queue discovery on Linux. It works by having each CUPS server periodically broadcast UDP packets on port 631 announcing its available queues. This method of discovery is being dropped in favour of DNS-SD. Support for this has been upstream in CUPS for some time -- it's what CUPS uses on Mac OS X -- but is not functional with Avahi. (For Fedora, I have added patches to support Avahi.) This means that once CUPS drops support for CUPS Browsing, automatic CUPS queue discovery *will require Avahi* to be running on both the server (i.e. the system hosting the CUPS queue) and the clients (i.e. the systems wanting to print to it). Some Filters Moving To New Home ------------------------------- Apple is removing some filters from CUPS as they are not needed for Mac OS X. These filters will be maintained in a new "cups-filters" project at OpenPrinting. As part of this move, Till Kamppeter will be merging the existing PDF Workflow filters¹ into that effort. The main purpose of this email was to raise awareness of the CUPS Browsing/Avahi issue. Till Kamppeter's email about the CUPS 1.6 changes on the printing-architecture list: http://lists.linuxfoundation.org/pipermail/printing-architecture/2012/002412.html Tim. */ ¹ http://www.linuxfoundation.org/collaborate/workgroups/openprinting/pdf_as_standard_print_job_format
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