Quoted from Trekkie1978:Can't remember where I read it, but the article said it would be a run of 100 machines.
I personally do not think Stern would waste their time doing a run of only 100. They sell worldwide not just domestic. The larger distributors probably requested 10-20 units. I would "guestimate" at least 200 units were produced on first run and they sold out from Stern the day of the announcement. Demand will determine the timing of the next run.