I have been working on the upcoming daylight savings time rule changes at work. Here is a collection of information that I gathered during my research:

Daylight Savings Time Change Background Information

Text of U.S. Energy Policy Act of 2005 See section 110.
Wikipedia article on Energy Policy Act of 2005

The new Daylight Saving Time changes start in March 2007:

Year DST Begins DST Ends
2007 March 11 November 4
2008 March 9 November 2
2009 March 8 November 1
2010 March 14 November 7
2011 March 13 November 6
2012 March 11 November 4
2013 March 10 November 3
2014 March 9 November 2
2015 March 8 November 1

Solaris

Note: According to the Sun advisory, changing the time on the system as a workaround will not work – “There is no workaround. Attempts to change the TOD clock of the system are temporary and will not resolve all the time zone issues.”

Sparc Solaris 8 requires the following patches (check to see if there are newer versions):
109809-04 (Reboot after install)
108993-65 (Install in single user mode, reboot after install)

Sparc Solaris 10 requires the following patches (check to see if there are newer versions):
122032-02 (Reboot after install)
118833-24 (Install in single user mode, reboot after install)

x86 Solaris 10 requires the following patches (check to see if there are newer versions):
122033-02 (Reboot after install)
118855-19 (Install in single user mode, reboot after install)

Firmware update required:
Sun Fire 3800 Server, Sun Fire 4800 Server, Sun Fire 4810 Server, Sun Fire 6800 Server, Sun Fire E6900 Server, Sun Fire E2900 Server, Sun Fire V1280 Server, Sun Fire E4900 Server, Netra 1280 Server
Sun Advisory Link:
Daylight Saving Time (DST) Changes for Australia (2006), United States (2007) and Others
Required Server Firmware for Timezone Changes Due to U.S. Energy Policy Act of 2005

Java

JDK/JREs with support for DST Changes
1.3.1_18 or later
1.4.2_11 or later
5 update 6 or later

Sun Java SE TZupdater Tool
Option for updating existing 1.4.x and later JDKs (instead of upgrading them). In the readme, this is not the preferred option – “Sun recommends utilizing the latest Sun Java SE JDK/JRE update release as the preferred vehicle for delivering both timezone data updates and other product improvements such as security fixes.”
Readme

Links:
Overview and Mitigation of the USA 2007 DST Issue for the Java SE platform and Solaris OS
U.S. Daylight Saving Time Changes in 2007

Windows 2000 / 2003 Server

Windows Server 2003 – see 928388
Windows 2000 – see description of tzedit.exe in the article below.

Preparing for daylight saving time changes in 2007