I noticed that this week Apple updated their web page on daylight saving time (launched at the end of January 2007).
Apple also released Java updates for Macintosh OS X version 10.3 and version 10.4 that accomodates the latest Daylight Saving Time. Apple's site notes that these updates include time zone information as of January 8, 2007.
Here are the links:
- http://www.apple.com/support/downloads/javaformacosx103update5.html (38MB). For detailed information on this update, visit http://www.info.apple.com/kbnum/n304585
- OS X v 10.4: http://www.apple.com/support/downloads/javaformacosx104release5.html (83MB). For more details on this Update, visit http://www.info.apple.com/kbnum/n304586