At the September IDF, Intel demonstated a 8 watt haswell chip matching the performance of a 17 watt ivy bridge chip. With refinements, could Intel put a haswell chip in a tablet in 2013?
The Samsung ATIV 700T tablet has an Ivy Bridge processor. Moving to Haswell when its available would be obvious.
As for the MacPad, I don't know if it will have a Haswell processor or a Baytrail processor.
Oh, the Samsung ATIV 700T would move to Haswell because the ATIV 500T would move to Baytrail.