What worries me is he said "While I only got to play around with a limited selection of units" I wonder if he feels the number is going to be greater than what we already have for the TEC?
A) there are two more races to add to what we have, and

while they cannon add "new" units at this point in the development cycle, things that are already in development are going to be added, such as some new units and some UI features.