Apple has reposted Security Update 2007-005, initially released on May 24th. Apple gives no explanation for the reposting, but simply re-interates the initial security update's purpose.
The new version is available to applicable users via Software Update, or via Apple's Support Website.
Apple had to update its last security update (2005-004) to v1.1 after the initial update introduced some bugs into specific versions of Mac OS X.