I talked to them at Sun and Fun back in April and asked this specific question on 0-360 (or Titan).
They said that large 4 cyl engines torque profile is too uneven for their current hubs and at that time they were not sure when they would release the hub for them.
They also mentioned that is much easier to make a hub for 6 cyl engine, like Jabiru for this very reason.
Airmaster only builds governors and uses blades from a number of manufactures, I've heard good things from Rotax community about them.