Last night, Argentina changed their timezone, effective Jan. 1, 2008. The customer requests Sun immediately implements these changes for both tzupdater and tzupdater131.
Posted Date : 2007-12-28 01:00:03.0

tzdata2007k was released.

Date: Mon, 31 Dec 2007 10:30:05 -0500

The files...
	ftp://elsie.nci.nih.gov/pub/tzcode2007k.tar.gz
...and...
	ftp://elsie.nci.nih.gov/pub/tzdata2007k.tar.gz
...are now available; these reflect the changes circulated last week on
the time zone mailing list (most importantly, changes to the
"southamerica" file based on Argentina's readoption of daylight saving
time.
Posted Date : 2008-01-07 02:39:28.0

N/A

Tzdata changes for Argentina and others. are under review by the tz mailing list. Those changes will be supported when the new tzdata release is available.

According to http://www.lanacion.com.ar/politica/nota.asp?nota_id=973996 , DST starts from 2007-12-30T00:00:00 (local standard time), not 2008-01-01T00:00:00.
Posted Date : 2007-12-28 01:34:21.0

I tested the fix and found it did make the correct changes for the new DST changes for Argnetina. Here are my results:

BEFORE FIX
----------
509 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=BeforeFix TestDST "12/29/2007 11:00:00 PM"
Saturday, December 29, 2007 11:00:00 PM ART (America/Argentina/Buenos_Aires) is not in daylight-savings time.

510 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=BeforeFix TestDST "12/30/2007 0:00:00 AM"
Sunday, December 30, 2007 12:00:00 AM ART (America/Argentina/Buenos_Aires) is not in daylight-savings time.
 
511 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=BeforeFix TestDST "01/01/2008 2:00:00 AM"
Tuesday, January 1, 2008 2:00:00 AM ART (America/Argentina/Buenos_Aires) is not in daylight-savings time.

INSTALLING FIX
--------------
518 $ /usr/bin/jdk1.5.0_11/bin/java  -jar tzupdater-1.3.3-ea.jar -u
 
519 $ /usr/bin/jdk1.5.0_11/bin/java  -jar tzupdater-1.3.3-ea.jar -V
tzupdater version 1.3.3-ea
JRE time zone data version: tzdata2007k
Embedded time zone data version: tzdata2007k

AFTER FIX
---------
521 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=AfterFix TestDST "12/29/2007 11:00:00 PM"
Saturday, December 29, 2007 11:00:00 PM ART (America/Argentina/Buenos_Aires) is not in daylight-savings time.

523 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=AfterFix TestDST "12/30/2007 0:00:00 AM"
Sunday, December 30, 2007 1:00:00 AM ARST (America/Argentina/Buenos_Aires) is in daylight-savings time.

524 $ java -Duser.timezone=America/Argentina/Buenos_Aires -Da=AfterFix TestDST "01/01/2008 2:0:00 AM"
Tuesday, January 1, 2008 2:00:00 AM ARST (America/Argentina/Buenos_Aires) is in daylight-savigs time.
Posted Date : 2007-12-28 18:26:37.0

tzdata2007k has been released.

Date: Mon, 31 Dec 2007 10:30:05 -0500

The files...
	ftp://elsie.nci.nih.gov/pub/tzcode2007k.tar.gz
...and...
	ftp://elsie.nci.nih.gov/pub/tzdata2007k.tar.gz
...are now available; these reflect the changes circulated last week on
the time zone mailing list (most importantly, changes to the
"southamerica" file based on Argentina's readoption of daylight saving
time.
Posted Date : 2007-12-31 23:54:50.0

Tzdata updater 1.3.3 (tzdata2007k) is now available.
For more information, please refer to http://java.sun.com/javase/tzupdater_README.html .
Posted Date : 2008-04-17 07:25:02.0

Please - Urgent - 
Where is available to download the  announced  version 1.3.3 of  tzupdater tool ?

We have a lot of trouble with Argentine DST Timezone.

HI SUN Team.-

Please were I an download the tzupdater 1.3.3?

It is very URGENT..

Best Regards
Cristobal

Hi team, we are unable to download the 1.3.3 tool because of some kind of web server problems. Please fix that soon, we have more than 10 days waiting for this file.

Thanks

Need this URGENT more than 10 days ago!!! Sun's technical support in Buenos Aires does not reply anything!! Very very poor!!
Here are some links with a workaround until the official release for those who can't wait:

http://www.lacaraoscura.com/2007/12/10/mi-experiencia-cambio-de-zona-horaria-en-venezuela/

http://www.javafree.org/javabb/viewtopic.jbb?t=12070

When is the estimated date for the new JRE update 15 will be released with the fix for this bug 6645783. Please sent me the date. my mail id :n_jeyaprakash@yahoo.com