On another note, regarding the dual Digic 5 processors... I don't see it happening, I betting on a single Digic 5+. No need for the expense of dual processors when one will do the job just fine.
it will be interesting to see --- the 7D architecture itsef is already dual Digic 4, so maybe dual digic 5 is not that far "out there" in terms of feasibility (i.e. depending on Digic 5 architecture, it may drop in nicely to the 7D bus..).
I wonder if single Digic 5+ would differentiate the 7D2 very well from the others, esp since it is dual digic 4 today. Note that it takes 2 Digic 5+s and a Digic 4 in the 1DX to produce 12fps with an 18mp sensor, although I'm seeing reports of acheiving 14 fps ... I just wonder if 7D2 might need more than a single Digic 5+ to get above the current 8 fps (A single Digic 5 can produce 10fps in the powershot, but this is only a 12MP sensor). Dual Digic 5 in the 7D2, with appropriate firmware and throttling of the I/O bus, could easily acheive 10fps, leaving room for the superior 1DX performance.
... but I don't know that much about Digic processors, or if a single Digic 5+ could produce 10fps with 18MP, given the right I/O subsystem. And I'm also assuming that 7D2 will bump up the fps, and that hasn't been verified either.