As reported by MacRumors.com:
A new posting at Cups.org reveals that Apple has purchased CUPS and hired its author:
In February of 2007, Apple Inc. acquired ownership the CUPS source code and hired me (Michael R Sweet), the creator of CUPS. CUPS will still be released under the existing GPL2/LGPL2 licensing terms, and I will continue to develop and support CUPS at Apple.
CUPS stands for Common Unix Printing System and was adopted by Apple in 2002 for Mac OS X.
CUPS is a standards based printer driver for Mac OS X (actually for Unix, but OSX is based on Unix)
The iPhone runs OSX lite = possibility of printing?