[font color=\'#000000\']Canon’s history of EOS models is a bit wobbly.. If we look at the film world for any analogy on how they rank their products, there was a time when an Eos3 existed, and was simply a cheaper version of a Eos 1V. A 10 or 20D are not a cheaper version of the 1D/1DS/1DII - they are akin to the Eos5, so a gap exists in their “inventory”. Some might think the 1DII is a type of Eos3, but in actual fact Canon have split the professional market into two, whereas before in the film world it was one.
In any event, the Eos 2D could be a primer for testing technology for a major makeover of the Eos1DS, which is well due for an overhaul, so I think we can expect a slightly smaller layout, new type of battery (Li-ion?) etc…
I believe the Eos2D exists, perhaps not with 22mp nor with a full frame sensor but at least a 1.3 FOV. If that is the case it will have to be slower than the 1DII and faster than the 20D (as far as RAW is concerned). Perhaps Canon will also unveil the next range of DO lenses (eg 200-400 f4 IS DO which was leaked on a Canon web site about a year ago).[/font]