On May 15th MOSS Beta 2 Technical Refresh (known as Beta2TR) will expire. If you are still running Beta 2 Technical Refresh you need to upgrade to RTM using the prescriptive guidance at http://technet2.microsoft.com/Office/en-us/library/3df597d0-bad0-4c73-9c26-a10bb80449881033.mspx?mfr=true. Upgrading to RTM requires special attention because some of the steps are not common for upgrades such as renaming a registry key before uninstalling B2TR. The upgrade document needs to be followed very precisely and any deviation from the documented steps can cause the process to fail. It is also strongly encouraged that complete database backups be made prior to executing these steps and that these steps be fully tested in a non-production environment.
You may find the following resources useful:
Upgrading from Office SharePoint Server 2007 Beta 2 Technical Refresh to Release Version
How to upgrade from Windows SharePoint Services 3.0 Beta 2 TR or SharePoint Server 2007 Beta 2 TR to the original release versions when you did not rename the DSN registry key to DSN2
How to upgrade from Windows SharePoint Services 3.0 Beta 2 to the original release version of Windows SharePoint Services 3.0
For additional information and downloads to MOSS beta products (if needed) can be found on the SharePoint blog
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Windows SharePoint Services v3 Beta does not have a time bomb and will not expire but we encourage you to upgrade to the release version as soon as you can.
Instructions for upgrading from WSS v3 Beta to RTM is documented here, http://technet2.microsoft.com/windowsserver/WSS/en/library/0af1c7a4-a054-40c3-b495-71371bed4af81033.mspx?mfr=true.
All of the other WSS upgrade documentation and beta builds are addressed in KB, http://support.microsoft.com/?id=928301.
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