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also, i won't be surprised when a newly designed mac pro is (at least) as different from the cMP as the turbine is.
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The simple question the bloggers/reporters could have asked (that apple probably wouldn't answer) is whether it is going to be a literal sits on desktop system ( like the MP 2013) or a desk-side/under-desk system like the (MP 2009-2012). If the primary objective is to push it "out of normal sight" then differences from past desk-side units probably wouldn't be all that high in general form.
If it is suppose to sit out on top of the desk and hit the same noise levels and similar desktop footprint constraints. That might lead to something with new differences.