Upcoming Haswell CPU in a nutshell:
- New socket; 1150.
- Increased integrated graphics performance especially in mobile CPUs. The "GT3" version of the iGPU will be exclusive only to mobile CPUs. It will have 40 shaders which is 2x more than in the desktop version. That can mean a potentially large increase in graphics performance.
- Lower power consumption.
- Increase in CPU performance likely to be relatively small; between 6% - 8% assuming the same clockspeed.
No solid info will be available until the Intel's NDAs expire; Non Disclosure Agreements. Probably will not happen until June which is when Intel is expected to officially announce the release of Haswell at one of the major electronics convention.