For the benefit of those looking to complete the oldtz archive, I've checked the entire mailing list archive for release announcements. I used <http://mm.icann.org/pipermail/tz/> for 1986 to 2010, and <http://news.gmane.org/gmane.comp.time.tz> for 2011. In this combination I believe they're a complete archive of the mailing lists, <tz@elsie.nci.nih.gov> and <tz@iana.org>, from inception on 1986-11-25 up to the present 2011-10-11. I extracted all the information from the archives today, 2011-10-11. I have some confidence that this is a complete list of the announcements on the mailing lists, because I grepped specifically for ones that seemed to be missing. (Did find a few that I'd missed on the first pass.) There are, however, some releases that were not announced, ranging from tz92b up to tzdata2011f. There are various other irregularities. This listing incorporates corrections that were made on the list, and obvious typo fixes. The dates given are the UT date of the announcement message (the original one, if later corrected) as reported by the archive. All announcements up to 2011k were by Arthur David Olson. I'd like to see someone expand this into a systematic list of all releases actually made. The mailing list contains a few mentions of releases that were not announced at the time, but I have no confidence that this would catch all unannounced releases. 1992-04-25 tz92.tar.Z only 1992-11-21 tz92c.tar.Z only 1993-01-08 tzcode93.tar.Z tzdata93.tar.Z 1993-02-02 tzdata93b.tar.Z only 1993-06-06 tzcode93c.tar.Z tzdata93c.tar.Z 1993-07-18 tzcode93d.tar.Z tzdata93d.tar.Z 1993-09-06 tzcode93e.tar.Z tzdata93e.tar.Z 1993-10-15 tzcode93f.tar.Z tzdata93f.tar.Z 1993-11-29 tzcode93g.tar.gz tzdata93g.tar.gz 1994-02-03 tzdata94a.tar.gz only 1994-02-07 tzcode94b.tar.gz tzdata94b.tar.gz 1994-02-10 tzcode94c.tar.gz only 1994-02-24 tzcode94d.tar.gz tzdata94d.tar.gz 1994-03-31 tzcode94e.tar.gz only 1994-05-05 tzcode94f.tar.gz only 1994-05-05 tzcode94g.tar.gz only 1994-07-04 tzdata94e.tar.gz only 1994-08-20 tzdata94f.tar.gz only 1994-12-10 tzcode94h.tar.gz tzdata94h.tar.gz 1995-03-11 tzcode95b.tar.gz tzdata95b.tar.gz 1995-03-13 tzcode95c.tar.gz only 1995-07-02 tzdata95c.tar.gz only 1995-07-03 tzdata95d.tar.gz only 1995-07-08 tzdata95e.tar.gz only 1995-08-29 tzdata95f.tar.gz only 1995-09-01 tzdata95g.tar.gz only 1995-09-14 tzcode95d.tar.gz only 1995-09-21 tzdata95h.tar.gz only 1995-09-26 tzdata95i.tar.gz only 1995-10-13 tzcode95e.tar.gz only 1995-10-28 tzcode95f.tar.gz tzdata95j.tar.gz 1995-10-30 tzcode95g.tar.gz tzdata95k.tar.gz 1995-12-19 tzcode95h.tar.gz tzdata95l.tar.gz 1995-12-21 tzcode95i.tar.gz tzdata95m.tar.gz 1996-01-06 tzcode96a.tar.gz tzdata96a.tar.gz 1996-01-11 tzcode96b.tar.gz only 1996-01-16 tzcode96c.tar.gz only 1996-01-27 tzdata96b.tar.gz only 1996-02-12 tzcode96d.tar.gz tzdata96c.tar.gz 1996-02-29 tzcode96e.tar.gz only 1996-03-19 tzdata96d.tar.gz only 1996-03-19 tzdata96e.tar.gz only 1996-04-19 tzdata96f.tar.gz only 1996-05-03 tzcode96f.tar.gz tzdata96g.tar.gz 1996-05-09 tzdata96h.tar.gz only 1996-05-16 tzcode96g.tar.gz only 1996-06-05 tzcode96h.tar.gz only 1996-07-01 tzdata96i.tar.gz only 1996-07-28 tzcode96i.tar.gz only 1996-07-30 tzcode96j.tar.gz only 1996-09-08 tzcode96k.tar.gz tzdata96k.tar.gz 1996-09-08 tzcode96l.tar.gz only 1996-11-05 tzcode1996m.tar.gz tzdata1996l.tar.gz 1996-11-24 tzdata1996m.tar.gz only 1996-12-16 tzcode1996n.tar.gz only 1996-12-28 tzcode1996o.tar.gz tzdata1996n.tar.gz 1997-01-21 tzcode1997a.tar.gz tzdata1997a.tar.gz 1997-02-27 tzcode1997b.tar.gz tzdata1997b.tar.gz 1997-03-04 tzdata1997c.tar.gz only 1997-03-08 tzcode1997c.tar.gz tzdata1997d.tar.gz 1997-03-29 tzcode1997d.tar.gz tzdata1997e.tar.gz 1997-05-03 tzcode1997e.tar.gz tzdata1997f.tar.gz 1997-07-19 tzcode1997f.tar.gz tzdata1997g.tar.gz 1997-09-04 tzcode1997g.tar.gz tzdata1997h.tar.gz 1997-10-07 tzdata1997i.tar.gz only 1997-12-18 tzcode1997h.tar.gz tzdata1997j.tar.gz 1997-12-29 tzcode1997i.tar.gz tzdata1997k.tar.gz 1998-01-13 tzcode1998a.tar.gz tzdata1998a.tar.gz 1998-01-17 tzcode1998b.tar.gz tzdata1998b.tar.gz 1998-02-28 tzcode1998c.tar.gz tzcode1998c.tar.gz 1998-05-14 tzcode1998d.tar.gz tzdata1998d.tar.gz 1998-05-28 tzcode1998e.tar.gz tzdata1998e.tar.gz 1998-06-01 tzcode1998f.tar.gz only 1998-07-20 tzdata1998f.tar.gz only 1998-08-11 tzdata1998g.tar.gz only 1998-09-24 tzcode1998g.tar.gz tzdata1998h.tar.gz 1998-10-01 tzcode1998h.tar.gz tzdata1998i.tar.gz 1999-01-19 tzcode1999a.tar.gz tzdata1999a.tar.gz 1999-02-01 tzcode1999b.tar.gz tzdata1999b.tar.gz 1999-03-25 tzcode1999c.tar.gz tzdata1999c.tar.gz 1999-03-30 tzcode1999d.tar.gz tzdata1999d.tar.gz 1999-08-17 tzcode1999e.tar.gz tzdata1999e.tar.gz 1999-09-23 tzcode1999f.tar.gz tzdata1999f.tar.gz 1999-09-28 tzcode1999g.tar.gz tzdata1999g.tar.gz 1999-10-07 tzdata1999h.tar.gz only 1999-11-08 tzcode1999h.tar.gz tzdata1999i.tar.gz 1999-11-16 tzcode1999i.tar.gz tzdata1999j.tar.gz 2000-01-18 tzcode2000a.tar.gz tzdata2000a.tar.gz 2000-02-21 tzcode2000b.tar.gz tzdata2000b.tar.gz 2000-03-04 tzcode2000c.tar.gz tzdata2000c.tar.gz 2000-03-14 tzdata2000d.tar.gz only 2000-04-20 tzcode2000d.tar.gz only 2000-07-31 tzcode2000e.tar.gz tzdata2000e.tar.gz 2000-08-10 tzcode2000f.tar.gz tzdata2000f.tar.gz 2000-10-10 tzcode2000g.tar.gz tzdata2000g.tar.gz 2000-12-14 tzcode2000h.tar.gz tzdata2000h.tar.gz 2001-03-13 tzcode2001a.tar.gz tzdata2001a.tar.gz 2001-04-05 tzcode2001b.tar.gz tzdata2001b.tar.gz 2001-06-05 tzcode2001c.tar.gz tzdata2001c.tar.gz 2001-10-09 tzcode2001d.tar.gz tzdata2001d.tar.gz 2002-01-28 tzcode2002a.tar tzdata2002a.tar 2002-01-28 tzcode2002b.tar.gz tzdata2002b.tar.gz 2002-04-04 tzcode2002c.tar.gz tzdata2002c.tar.gz 2002-10-15 tzcode2002d.tar.gz tzdata2002d.tar.gz 2003-03-24 tzcode2003a.tar.gz tzdata2003a.tar.gz 2003-09-16 tzcode2003b.tar.gz tzdata2003b.tar.gz 2003-09-16 tzcode2003c.tar.gz tzdata2003c.tar.gz 2003-10-06 tzcode2003d.tar.gz tzdata2003d.tar.gz 2003-12-15 tzcode2003e.tar.gz tzdata2003e.tar.gz 2004-05-27 tzcode2004a.tar.gz tzdata2004a.tar.gz 2004-07-19 tzcode2004b.tar.gz tzdata2004b.tar.gz 2004-08-11 tzcode2004c.tar.gz only 2004-09-22 tzdata2004d.tar.gz only 2004-09-13 tzcode2004d.tar.gz only 2004-10-11 tzcode2004e.tar.gz tzdata2004e.tar.gz 2004-10-21 tzcode2004f.tar.gz only 2004-11-02 tzcode2004g.tar.gz tzdata2004g.tar.gz 2004-12-07 tzcode2004h.tar.gz only 2004-12-14 tzcode2004i.tar.gz only 2005-01-01 tzcode2005a.tar.gz tzdata2005a.tar.gz 2005-01-10 tzcode2005b.tar.gz tzdata2005b.tar.gz 2005-01-17 tzcode2005c.tar.gz tzdata2005c.tar.gz 2005-01-31 tzcode2005d.tar.gz only 2005-02-10 tzcode2005e.tar.gz tzdata2005e.tar.gz 2005-03-01 tzcode2005f.tar.gz tzdata2005f.tar.gz 2005-03-14 tzcode2005g.tar.gz tzdata2005g.tar.gz 2005-04-04 tzcode2005h.tar.gz tzdata2005h.tar.gz 2005-04-21 tzdata2005i.tar.gz only 2005-06-13 tzcode2005j.tar.gz tzdata2005j.tar.gz 2005-07-14 tzcode2005k.tar.gz tzdata2005k.tar.gz 2005-08-22 tzcode2005l.tar.gz tzdata2005l.tar.gz 2005-08-29 tzcode2005m.tar.gz tzdata2005m.tar.gz 2005-10-03 tzcode2005n.tar.gz tzdata2005n.tar.gz 2005-11-28 tzcode2005o.tar.gz tzdata2005o.tar.gz 2005-12-05 tzcode2005p.tar.gz tzdata2005p.tar.gz 2005-12-13 tzcode2005q.tar.gz tzdata2005q.tar.gz 2005-12-27 tzcode2005r.tar.gz tzdata2005r.tar.gz 2006-01-30 tzcode2006a.tar.gz tzdata2006a.tar.gz 2006-02-20 tzdata2006b.tar.gz tz32code2006b.tar.gz tz64code2006b.tar.gz 2006-04-03 tzcode2006c.tar.gz tzdata2006c.tar.gz 2006-04-17 tzcode2006d.tar.gz tzdata2006d.tar.gz 2006-05-01 tzcode2006e.tar.gz tzdata2006e.tar.gz 2006-05-01 tzcode2006f.tar.gz tzdata2006f.tar.gz 2006-05-08 tzcode2006g.tar.gz tzdata2006g.tar.gz 2006-07-24 tzcode2006h.tar.gz only 2006-08-07 tzcode2006i.tar.gz only 2006-08-21 tzcode2006j.tar.gz tzdata2006j.tar.gz 2006-08-28 tzcode2006k.tar.gz tzdata2006k.tar.gz 2006-09-18 tzdata2006l.tar.gz only 2006-10-02 tzcode2006m.tar.gz tzdata2006m.tar.gz 2006-10-10 tzcode2006n.tar.gz tzdata2006n.tar.gz 2006-11-06 tzcode2006o.tar.gz tzdata2006o.tar.gz 2006-11-27 tzcode2006p.tar.gz tzdata2006p.tar.gz 2007-01-08 tzcode2007a.tar.gz tzdata2007a.tar.gz 2007-02-12 tzcode2007b.tar.gz tzdata2007b.tar.gz 2007-02-26 tzcode2007c.tar.gz tzdata2007c.tar.gz 2007-03-20 tzcode2007d.tar.gz tzdata2007d.tar.gz 2007-04-02 tzcode2007e.tar.gz tzdata2007e.tar.gz 2007-05-07 tzcode2007f.tar.gz tzdata2007f.tar.gz 2007-08-20 tzcode2007g.tar.gz tzdata2007g.tar.gz 2007-10-01 tzcode2007h.tar.gz tzdata2007h.tar.gz 2007-11-01 tzdata2007i.tar.gz only 2007-12-03 tzcode2007j.tar.gz tzdata2007j.tar.gz 2007-12-31 tzcode2007k.tar.gz tzdata2007k.tar.gz 2008-03-08 tzcode2008a.tar.gz tzdata2008a.tar.gz 2008-03-24 tzdata2008b.tar.gz only 2008-05-27 tzdata2008c.tar.gz only 2008-07-07 tzdata2008d.tar.gz only 2008-07-28 tzcode2008e.tar.gz tzdata2008e.tar.gz 2008-09-15 tzdata2008f.tar.gz only 2008-10-06 tzcode2008g.tar.gz tzdata2008g.tar.gz 2008-10-13 tzcode2008h.tar.gz tzdata2008h.tar.gz 2008-10-27 tzdata2008i.tar.gz only 2009-01-21 tzcode2009a.tar.gz tzdata2009a.tar.gz 2009-02-09 tzcode2009b.tar.gz tzdata2009b.tar.gz 2009-03-16 tzdata2009c.tar.gz only 2009-03-23 tzcode2009d.tar.gz tzdata2009d.tar.gz 2009-04-06 tzcode2009e.tar.gz tzdata2009e.tar.gz 2009-04-13 tzdata2009f.tar.gz only 2009-04-27 tzdata2009g.tar.gz only 2009-05-26 tzcode2009h.tar.gz tzdata2009h.tar.gz 2009-07-08 tzcode2009i.tar.gz tzdata2009i.tar.gz 2009-07-18 tzdata2009j.tar.gz only 2009-07-20 tzcode2009k.tar.gz tzdata2009k.tar.gz 2009-08-17 tzdata2009l.tar.gz only 2009-09-08 tzdata2009m.tar.gz only 2009-09-28 tzdata2009n.tar.gz only 2009-10-19 tzdata2009o.tar.gz only 2009-10-26 tzdata2009p.tar.gz only 2009-11-02 tzcode2009q.tar.gz tzdata2009q.tar.gz 2009-11-09 tzcode2009r.tar.gz tzdata2009r.tar.gz 2009-11-16 tzdata2009s.tar.gz only 2009-12-21 tzcode2009t.tar.gz tzdata2009t.tar.gz 2009-12-28 tzdata2009u.tar.gz only 2010-01-18 tzdata2010a.tar.gz only 2010-01-25 tzdata2010b.tar.gz only 2010-02-16 tzcode2010a.tar.gz only 2010-03-01 tzcode2010c.tar.gz tzdata2010c.tar.gz 2010-03-08 tzdata2010d.tar.gz only 2010-03-08 tzdata2010e.tar.gz only 2010-03-22 tzcode2010f.tar.gz tzdata2010f.tar.gz 2010-03-29 tzdata2010g.tar.gz only 2010-04-05 tzdata2010h.tar.gz only 2010-04-19 tzdata2010i.tar.gz only 2010-05-10 tzcode2010j.tar.gz tzdata2010j.tar.gz 2010-07-26 tzcode2010k.tar.gz tzdata2010k.tar.gz 2010-08-16 tzcode2010l.tar.gz tzdata2010l.tar.gz 2010-09-27 tzcode2010m.tar.gz tzdata2010m.tar.gz 2010-10-25 tzcode2010n.tar.gz tzdata2010n.tar.gz 2010-11-01 tzdata2010o.tar.gz only 2011-01-24 tzcode2011a.tar.gz tzdata2011a.tar.gz 2011-02-07 tzcode2011b.tar.gz tzdata2011b.tar.gz 2011-03-07 tzcode2011c.tar.gz tzdata2011c.tar.gz 2011-03-14 tzcode2011d.tar.gz tzdata2011d.tar.gz 2011-04-01 tzcode2011e.tar.gz tzdata2011e.tar.gz 2011-04-25 tzcode2011g.tar.gz tzdata2011g.tar.gz 2011-06-27 tzdata2011h.tar.gz only 2011-08-29 tzcode2011i.tar.gz tzdata2011i.tar.gz 2011-09-12 tzdata2011j.tar.gz only 2011-09-26 tzdata2011k.tar.gz only 2011-10-10 tzdata2011l.tar.gz only -zefram