Navigate to staged timezone version page:
  http://jscpreview.sfbay/javase/timezones/tzdata_versions.html

Under title:
  "By the Java SE Platform Support Team, July 2008"

Should say October 2008.


ALso, click on the RSS icon:
The page returned only lists tzupdater tool version 1.3.6 and earlier.
No mention of later versions.