In a previous blog, it was discussed on where you can get a list of the Failover Clustering and Hyper-V hotfixes for Windows Server 2008 R2.
Looking for Windows Server 2008 R2 Cluster and Hyper-V Hotfixes?
http://blogs.technet.com/b/askcore/archive/2013/02/15/looking-for-windows-server-2008-r2-cluster-and-hyper-v-hotfixes.aspx
In this blog, we give the links to newly released hotfixes for Failover Clustering and Hyper-V so you know what hotfixes are out there. There are two Wiki pages that will make life easier for you when looking for hotfixes for Windows Server 2012 Clustering and Hyper-V.
Hyper-V: Update List for Windows Server 2012
http://social.technet.microsoft.com/wiki/contents/articles/15576.hyper-v-update-list-for-windows-server-2012.aspxList of Failover Cluster Hotfixes for Windows Server 2012
http://social.technet.microsoft.com/wiki/contents/articles/15577.list-of-failover-cluster-hotfixes-for-windows-server-2012.aspx
These Wiki pages are updated on a regular basis. You can setup an RSS Subscription to the Wiki page so you can the updated Wiki page in your favorite RSS app or Outlook.
John Marlin
Senior Support Escalation Engineer
Microsoft Enterprise Platforms Support