I have seen that the IDmkIV is starting to ship. There are some decent comparisons posted elsewhere. So far based on what I have seen the 1DsmKIII still renders better detail. EVen at the iso 3200 comparisons without any NR added, the IDsmkIII still renders a bit better detail.
Images at iso 25,000 look usable-- which is impressive.
Images at iso 25,000 look usable-- which is impressive.