Do not worry. GreatEbike team is in full operations even during the Corona Virus crisis in EU.
Shimano is currently the world's largest cycling component manufacturer and in 2010 they has also decided to join the global e-bike market. Their drive STEPS E6000 is specified as a "Light Off Road" and finds use mainly for trekking e-bikes. STEPS E8000 is developed for off road riding in 2017. It is the smallest drive for the eMTBs and has a torque of up to 70Nm, but it feels like more. Both these engines are well balanced and very energy efficient.