Apple to further polish Leopard with 10.5.7 update
www.appleinsider.com/articles/09/02/25/apple_to_further_polish_leopard_with_10_5_7_update.html
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.
Apple this week is believed to have tapped its vast developer community to begin testing Mac OS X 10.5.7, a sizable maintenance and security update to the company's Leopard operating system with a particular focus on syncing improvements.