List of Failover Cluster related hotfixes post RTM for Windows Server 2012
Windows Server 2012 RTM (a.k.a. Gold)
Note: You should check https://support.microsoft.com for the latest version of the different files.
Note 2: As any hotfix, you should test in your Test and/or Quality Assurance environment before being rolled out.
List of Failover Cluster related hotfixes post RTM for Windows Server 2012 as of Nov. 2012:
2784261 Recommended hotfixes and updates for Windows Server 2012-based Failover Clusters