New time zone data tzdata2006a has been released on January 30, 2006. The changes from the tz mailing list are:

* Create a new zone America/Indiana/Petersburg for Pike County,
  Indiana, which moved from central to eastern time in 1977.

* Adjust America/Indiana/Petersburg and America/Indiana/Knox, since
  Pike and Starke Counties will switch to CST in April.  Create a new
  Zone America/Indiana/Vincennes for Daviess, Dubois, Knox, Martin,
  Perry, and Pulaski Counties, Indiana, which will also switch.

* Create a new zone America/Moncton for New Brunswick, which recently
  announced that it will follow the new US rules in 2007.  New
  Brunswick switches at 00:01, not 02:00, so it needs a separate zone.

* In October 2005 Gaza switched at 02:00, not 01:00.