Não tenho certeza se você ficaria feliz com esta afirmação ou não, aqui está a declaração oficial:
Configuration Manager supports installing System Center 2012 R2 Configuration Manager to upgrade a site that runs Configuration Manager SP1. You can run the upgrade on the site servers of central administration sites and primary sites. After a primary site upgrades, you can then use the Configuration Manager console to upgrade secondary sites to System Center 2012 R2 Configuration Manager.
Resposta atualizada:
A atualização do SO no local é oficialmente suportada no Windows Server 2012 para o Windows Server 2012 R2
Updated details for the in-place upgrade of the site server operating system. Windows Server 2012 to Windows Server 2012 R2 is supported.
Detalhe completo:
Configuration Manager supports an in-place upgrade of the operating system of the site server in the following situations:
- In-place upgrade to a higher Windows Server service pack as long as the resulting service pack level remains supported by Configuration Manager.
- In-place upgrade from Windows Server 2012 to Windows Server 2012 R2.
Configuration Manager does not support the following Windows Server upgrade scenarios.
- Any version of Windows Server 2008 to any version of Windows Server 2008 R2 or later.
- Any version of Windows Server 2008 to any version of Windows Server 2012 or later.
- Any version of Windows Server 2008 R2 to any version of Windows Server 2012 or later.
Fonte: link
Informações adicionais:
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