yes, the phono and line sections are now each star-earthed, with the earths running together through the centre between the channels, rather than separate around the outsides, in an attempt to shorten the hum loops, which is quite a change and may have improved resolution, but the casework thing is what really sorted the hum out
you can just about see the earth wires on this picture, look for the blue enamel covered silver wires clustered between the channels in the line and audio sections