All have been updated with self-illuminated jack sockets (as seen on the disting and ES-8), and are in general less deep. Otherwise functionality, and price, remains the same as the previous versions.
All are expected to be available February 2017.
The ES-6 is the counterpart to the ES-3 Lightpipe/CV Interface, offering up to 8 channels of CV input with output via an optical lightpipe connection.
The ES-7 provides two channels of DC-coupled CV input to a connected ES-4 or ES-6 module.
Both are available now.