This is not a late April fool’s joke. SQL Server 2014 has been made generally available on April 1st 2014. See the original blog post here: http://blogs.technet.com/b/dataplatforminsider/archive/2014/04/01/sql-server-2014-now-generally-available.aspx
I encourage you to download and try SQL Server 2014 or run it in a VM in our Azure cloud. Also you might want to block your calendars for a live stream on April 15: “Accelerate Your Insights” (http://www.microsoft.com/en-us/server-cloud/new.aspx?WT.mc_id=Blog_SQL_Launch_SQL2014).