Looks like that DI unit is the new low Q transducer. It does have improved 2D due to the low Q but I don't know if there is anything different with the DI element .... maybe Rickie will have some more insight.

It is possible it is just getting the settings adjusted on the SI unit. I don't have one of those, but I think there is an offset in the imaging sensitivity settings that allow you to adjust the DI seperately from the SI sensitivity.