Analysis of information sources in references of the Wikipedia article "DJI Ronin" in English language version.
On top of what normal 3-axis gimbals are able to do, the Ronin 4D adds a 4th axis, the Z axis, to the stabilization
The original Ronin battery can be used with the Ronin-M, but the Ronin-M battery cannot be used in the original Ronin.
The maximum weight that can be carried by the M600 is 13.2 lbs (6.0kg). As the Ronin-MX weighs 4.74 lbs (2.15 kg, including vibration absorber), the maximum weight that you can fly with the M600 is 8.49 lbs (3.85 kg).
DJI has made an optional LiDAR Focusing System which they hope will simplify complex focus tools for a user-friendly experience.
In terms of form factor, you'd be hard pressed to tell the difference between the Ronin-S and Ronin-SC...the 2.4lbd/1.1Kg Ronin-SC has been shrunk down to about 40% the size of the Ronin-S
While the app allows for an more visible interface, with this new touchscreen LCD, you don't actually need it at all, unlike previous generations