Apple can not use any processor higher than 45W power, that is the reason they do not use the i7-4960HQ with Intel Iris 5200 = 47W.
Upon what do you base this assertion? Certainly the current CPU has a power draw of 45 watts, but this only establishes that they can use at LEAST 45 watts in the current design, not at most. Furthermore, one of the technical differences of the Haswell line is the inclusion of onboard voltage regulators, which used to be discrete components with a separate power budget. Finally, there are many things that can be revised to account for a 2 watt change without a total redesign...
Sorry for sounding harsh, but things passed as absolute facts in rumor forums are often not.
I look forward to seeing what Apple really does!
-JimJ
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