SQL 2014 has not yet been released. (we're not yet in 2014 remember)
There is a public CTP available, but these things can still be riddled with bugs. Furthermore, you cannot install it on a server where another version of SQL Server has been installed.
What is interesting in this CTP? For now the in-memory OLTP and the clustered columnstore index, but that's about it.
Need an answer? No, you need a question
My blog at https://sqlkover.com.
MCSE Business Intelligence - Microsoft Data Platform MVP