I don't pay a lot of attention to the chips inside of cameras, but I found this primer on EXPEED4 by Thom Hogan quite interesting. Misleading classifications (pointed out himself, a bit, in the footnote) aside, this does give a lot of interesting information.
It's mostly about what's in the next generation of the family of chips that feeds the EXPEED models. The thing I found most interesting about it, is that it indicates that the EXPEED is actually the limiting factor in why the D4 isn't capable of higher speeds. There's also a hint that Canon's 1DIV can go faster because it can use multiple processors together for greater speed. Very neat stuff.
It's also implied that the reason the D800 can't shoot faster wasn't a matter of Nikon trying to force sports shooters to the higher-price D4, but merely that the chip can't handle a faster speed with that many pixels.
Anyway, there's some other stuff with some specific call-outs for features in upcoming cameras, although I wasn't as interested in that. But if you are, check out the full article.
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