I believe 2,000 is correct as I have heard/seen it too. Most of the Hasegawa limited kits have a run of between 2,000 to 5,000, I guess depending on demand.
Minmay Guard had a run of 5,000 while the Low Vis, Max & Millia 1J's and the Wedding 1D only had a run of 3,000 each!
If you go to Hasegawa's web page they will tell you on the quantaty released!
Andy