The product group recently released the March 2013 Public Update (PU) for the SharePoint 2013 product family.
Important: Due to a change in the package configuration introduced after SharePoint 2013 RTM the March Public update is a mandatory requirement in order to install subsequent SharePoint 2013 Updates.
That means that in order to install future cumulative updates for SharePoint 2013 it will be mandatory to first install the March public update.
The Full Server Packages for March 2013 PU are available through the following links:
Be aware that the SharePoint Server 2013 PU contains the SharePoint Foundation PU. And the Project Server 2013 PU contains SharePoint Server PU and SharePoint Foundation PU.That means only one package has to be installed for the SharePoint 2013 product family.
Related Update Center:
Worth calling out here that there are specific steps required for servers running Search components. Details here: go.microsoft.com/fwlink
Do you have any idea why the Titles of these are now only (Public) "Upgrade" rather than "Cumulative Upgrade" which has been the standard for many years?
Yes, I saw that they write in the text that it is a cumulative upgrade, but it seems incorrect to me that - especially as this upgrade is essential for future upgrades - that they should have chosen this particular CU for a name change.
we always had PUs and CUs. But that's a common question.
Does the March 2013 PU contain everything in the Feb 2013 CU? If not, does the Feb 2013 CU contain the fixes in the March 2013 PU?
there is no Feb 2013 CU for SharePoint 2013.