That is only preview. Neither the software or neither the Graphics drivers are up to the mark now. With current applications, don't expect a huge performance boost but when applications will start coming with the new optimization, TSX support etc, I'm sure there will be something big. In case of Intel, it is not a big deal as they are the main provider of Compiler for development. Sure they will integrate all the features in their upcoming Compiler releases and software developers can very easily access those features to their existing and new applications.