SharePoint 2013 and SQL Server 2014 Supportability

We will support SQL Server 2014 with SharePoint Server 2013 but we need April 2014 CU and also SP1 installed.

RTM of SQL Server 2014 and when SharePoint 2013 will be supported: http://blogs.technet.com/b/wbaer/archive/2014/03/21/sql-server-2014-and-sharepoint-server-2013.aspx

Using SQL Server 2014 Reporting Server (SSRS) features together with SharePoint 2013? Check more here: http://technet.microsoft.com/en-us/library/gg492257(v=sql.120).aspx

Without an April 2014 full-server package for SharePoint Server 2013 we cannot say yet that it will be supported with all available features. We also need updated information in our TechNet that we now support SQL Server 2014, but it should be available as soon all information are collected.

Resources:
http://blogs.msdn.com/b/joerg_sinemus/archive/2014/04/09/sharepoint-2013-and-09-april-2014-status.aspx