Looking forward to seeing where this goes.
I'm hoping to see how the lib authors:
1.) deal with model workflow (for example, how do I go from model building to prediction?); 2.) explain what data structures they hope to introduce (if all the authors did was make a strong matrix library for server-side javascript, that would be enough to make everyone's day); 3.) outsource the computational grunt work to C (or Fortran, if they're really adventurous)