Vicky, I guess you are referring to TSX or Transactional Synchronization Extensions X86 instruction which has been added in Hashwell architecture. Obviously it is a break through as Hashwell is going to be the 1st X86 Processor to incorporate it and there is no doubt, applications with TSX support will show a huge performance boost due to better multi-threading support. But the problem is whenever a new instruction set comes into the picture, software developers just can't adopt it as it requires huge amount of effort to port an existing application into the new framework with newer instruction set support. It needs several code paths for different processors, one with TSX support and one without it. For that reason you need couple of years for the new Instruction sets to become Mainstream.
But even though the approach Intel has shown is a positive path and there are a lot of Database and Server application with TSX support through software. With minor changes they can adopt the hardware support for the same and can show a huge performance boost, better than the 10-15% predicted.