This update supersedes and replaces update 2570791
, which was released in August 2011. No additional time zone changes were released as hotfixes after update 2570791
If you have already deployed update 2570791
, read the descriptions of the specific time zone changes that are addressed in this article to determine whether you must deploy this update immediately. If systems are not directly affected, you can schedule deployment at the next available opportunity.
We recommend that you deploy the most current Windows cumulative time zone update to guarantee the consistency of the time zone database on all systems.