A question regarding Ashraf's SA article about baytrail tablet chips this afternoon.
There is a strong suspicion that Haswell will fully integrate the voltage regulator. By having the voltage regulator on the CPU, the Haswell microcode or the OS software can lower the voltage or shut down large section of the CPU (extra cores) . You can dynamically throttle parts of the CPU when subsystems are not needed.
Software optimization to identify the performance/power sweet spots is also still underway and those results will be demonstrated at product introductions.
6 weeks to CESW 2013. Should be an interesting conference.