Q: Do I need a patch for Dynamics CRM or will patching Exchange/Outlook be adequate?
A: Yes. For Windows CRM 3.0, the DST remediation involves a both CRM hotfix + the Windows hotfix (http://support.microsoft.com/kb/931836).
This CRM article – http://support.microsoft.com/kb/925874 – is the public KB on the CRM hotfix date for CRM 3.0. The update for CRM has a release date of March 2 and will be available via the Download Center on www.microsoft.com/downloads. In addition to the Microsoft Dynamics CRM 3.0 hotfix, a tool will be provided so that Microsoft Dynamics CRM administrators can correct records that may have incorrect DST settings. After the tool is run, there will be a detailed log file of results. A comprehensive document will be provided that describes how Microsoft Dynamics CRM administrators can correct the stack technologies that Microsoft Dynamics CRM uses.