WIndwing RIGOne seems equally radical, maybe that's the one.
I had the pleasure of testing the prototype of the medium, at 6.9m on fox 105 in 25 knots rough open water (La Ventana, Baja)
Very stable and the wind range is as stated,
Felt like 6.0.
But a proper PIA to rig. Managed 32 knots on that session. Maybe best to open new thread if any of the US riders are reading...