From the discussion I had with Eric Glesser at Blade, they're trying to move away from the eccentric pivot. The purpose of the eccentric pivot was to be able to get around somewhat low tolerances on the parts by adjusting the pivot. Now, I think they're trying to just make parts with tighter tolerances, so everything fits together perfectly without adjustments.
Note that we didn't specifically discuss the ATR, so I don't know if it applies here.