Apple OS X Leopard: A beautiful upgrade
www.infoworld.com/t/platforms/apple-os-x-leopard-beautiful-upgrade-086
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Finally, a PC Unix that everyone can love. OS X Leopard is a triumph of customer-focused engineering Apple's announcement of the impending delivery of OS X Leopard (release 10.5 of Mac and Xserve operating systems) marks the public debut of an engineering achievement that dwarfs iPhone, iPod, Windows, and Linux.