Microsoft has finally released some information during the TechEd North America 2013 Day 1 Keynote about the next major version of SQL Server, which will be called SQL Server 2014. According to Mary Jo Foley, it is due to be released in early 2014, shortly after the release of Windows Server 2012 R2 (aka Windows Blue Server).
Here are a few quick links to some early information and thoughts about SQL Server 2014:
SQL Server 2014: Unlocking Real-Time Insights
There are definitely some interesting new features in SQL Server 2014 that I will be talking about in some more detail pretty soon.