The Telosys CLI (Command Line Interface) is just a "Proof Of Concept" at the moment, not yet released. So there's no documentation available for this tool.

Where does this stand? Has any progress been made on this front?

Telosys CLI is now released See : http://www.telosys.org/cli.html and https://github.com/telosys-tools-bricks/telosys-cli/wiki