Das ist nicht nur eine wirtschaftliche, sondern auch technische Entscheidung, die sogar ziemlich sinnvoll ist. Auch für Linux.
Hier eine Stellungsnahme des Entwicklers, zitiert aus dem Heise Forum:
Well, if I could actually read German I might be able to comment more
specifically, however there are two key changes in CUPS 1.6 that
these articles *might* be talking about:
1. Linux-only print backends/filters have moved out of the core CUPS
distribution and are now being maintained and developed by the Open
Printing project (Linux Foundation) - Linux users won't see a
difference.
2. CUPS Browsing (UDP broadcasts over port 631) is no longer
supported in CUPS 1.6, replaced by Bonjour (DNS-SD, ZeroConf, and
mDNS). This has been coming for a long time - it only ever worked
well for small networks with well-known hostnames for the "server"
systems, and UDP broadcasts over Wi-Fi have a serious performance
impact on the performance/bandwidth that is available, not to mention
wasted power for portable devices... This mainly affects people that
use BrowsePoll and/or implicit classes for load balancing - regular
printer sharing will continue to work, just using a different
protocol for finding and using the printers.
http://www.heise.de/open/news/foren/S-Und-hier-ist-eine-Antwort-des-Entwicklers/forum-222028/msg-21443591/read/
Statt Bonjour müsste man unter Linux halt Avahi einsetzen und daran wird ja gerade gearbeitet.