Hello Ian - Platform support for Windows Server 2008 SP2 has been removed. There will not be a "fix / patch" provided. Official support for Windows Server 2008 SP2 is not planned for inclusion with future Spectrum releases.
For Windows, you can install Spectrum 10.2 on Windows Server 2008 R2 SP1 (64 bit), Windows Server 2012 (64 bit), or Windows Server 2012 R2 (64 bit).
If you have specific questions about planning for a Spectrum upgrade please contact CA Technical Support and we can have a more detailed discussion.
Regards -