“The Debian project is pleased to announce the fifth update of its stable distribution Debian GNU/Linux 4.0 (codename etch). This update mainly adds corrections for security problems to the stable release, along with a few adjustment to serious problems.
Please note that this update does not constitute a new version of Debian GNU/Linux 4.0 but only updates some of the packages included. There is no need to throw away 4.0 CDs or DVDs but only to update via an up-to-date Debian mirror after an installation, to cause any out of date packages to be updated.
Those who frequently install updates from security.debian.org won’t have to update many packages and most updates from security.debian.org are included in this update.“
Release Announcement: http://www.debian.org/News/2008/20081023
A complete list of all accepted and rejected packages together with rationale is on the preparation page for this revision: http://release.debian.org/stable/4.0/4.0r5/
Note: I was quite surprised to see this new update for etch now when the Debian team is focusing on the imminent release of lenny. Well, anyway… let’s get back to upgrade our systems. ;–)