Posaune32 wrote: Am I remembering correctly and are the recorded tremulant samples no longer in the set anymore, or did it never have them?
It never had them; it always used modeled tremulants. This version just adds sampled tremulants for the "most important" stops to have them. (And it does work pretty effectively. For example, if you use the Vox Humana and the Bourdon together on Manual III, the real tremulant on the Vox hides the simultaneous fake tremulant on the Bourdon so it sounds OK.)
The organ is very large, in a big room, all three main manual divisions have tremulants. I imagine Voxus probably figured that sampled tremulants for the whole organ would put the cache size outside of the possibility of most people's RAM specifications, which is now even more true in the surround version.