A prototype of the professional Olympus E-P1 DSLR was shown for the first time at Photokina 2006. Although very much a mockup with few details, the Olympus E-P1 model does at least show the general direction that Olympus are heading in with their professional DSLR line-up. The “E-P1” part is apparently just the internal develpment name, this will probably change to the E3 (to be confirmed)…