As I understand it, it's the gearbox that is the limiting factor, ie. it can't take more power from the engines. As the test aircraft looks to be using the same rotor head and blades with the pendulum weights I would suggest it's the same gear box and therefore possibly a BK117 C3 as opposed to an EC145/6 T2 etc.
I hope I'm wrong as it's high time the EC145 was a reality and not just a commercial name.