I think Goldsman's actual statement is pretty vague - he could easily mean a spinoff with the non-TOS cast. Just redress the sets and you're off to the races.
He could also mean a movie, or...some third thing.
And in any case, he's moving on with his career.
It's cool that they're excited about possibilities, but I remain very skeptical that there's any actual traction there.
I always figured TAS was the final two years of the five-year mission...