To me it seems that RIM is running late on this. They need to release the files as soon as a possible..the closer the problematic DST dates get, the more user entries for those future calendar dates will be entered.
From what I gather from RIM's Current documentation:
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SERVER
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- Administrators need to upgrade their BES servers to a version later than 4.0.5
- Apply OS patches to BES server for new DST (such as windows2003 DST patch)
- Domino: Install a hotfix from RIM for BlackBerry Enterprise Server Version 4.1 SP1 and 4.1 SP2. Not Yet Released! They don't mention 4.0.6....so I'm not sure what's required there.
- Exchange. Um..check the pdf here:
Livelink - Redirection
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Users
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- All BlackBerry users must apply a Microsoft Windows® patch to update the time zone registry keys on their computers.
- BlackBerry devices that are running BlackBerry Device Software Version 4.0.0, 4.0.2, and 4.1.0 (earlier than the versions specified above) require a new .cod file to update the DST values in the BlackBerry Device Software. This .cod file will be available for download at BlackBerry. NOT YET AVAILABLE