This is interesting. Modartt has an open beta for a new instrument:
The logo is a stylized wind/air swirl motif and shows a blurred screenshot of "AIRTEQ" — set against a sky/clouds backdrop. The UI further shows what appear to be multiple breath/resonance envelope panels, vertical slider controls (likely for tube/bore parameters), and a keyboard at the bottom — consistent with a physical modeling synth for wind instruments.
I guess that would cover wind/aerophone instruments like flutes, clarinets, saxophones, brass, etc.
I was hoping for a harmonium personally, though maybe there's still a chance it supports that... those pipes might imply a pipe organ, although that's just wishful thinking on my part (they already have a pipe organ but it doesn't support harmonium).
They never stop innovating over there.