ZMorph 2.0 SX is a new model that is replacing ZMorph 2.0 S in our offer but we still plan to continue software support for ZMorph 2.0 S. For example, soon your machine will be able to utilize color mixing feature in a Dual PRO toolhead. All updates for Voxelizer software are also compatible with the previous models of our machine and we plan to keep it this way.
Closed Loop System is not a software solution but a piece of hardware (run by a dedicated software) mounted on the left side of the X axis. The touchscreen interface is another example of the new hardware used for building the SX machine. These are parts of a new machine that we offer, just like a screen in a new TV or a hard drive in a laptop.
Closed Loop System and Touchscreen are new solutions we introduced and at the moment are not compatible with previous ZMorph machines. Toolheads and worktables on the other hand, can be used with both S and SX models and we plan to keep it that way as long as possible.
@eye3d I also deleted another topic you created on the same subject, so we can discuss this in one place.