Only in the US there are a lot of Haas machines. In the rest of the world you are not very likely to find them. So if they designed it for Haas only it's useless.
I mean all Heidenhain controls have probing built in without even the need for probe specific macros. So you would expect them to start with that instead of a very specific very small number of machines.
Apart from that it should also be able to work on any Fanuc or Siemens control.
About factory options nearly any serious machine you can buy with a probe out of the factory. So that not really special for Haas.
Laurens Wijnschenk
3DTechDraw
AutoDesk CAM user & Post editor.
Found out the hard way is the best way to win.