What type of engine is mounted on the Cessna Citation Hemisphere?
The Cessna website mentions the engine type used (emphasis mine):


  The Citation Hemisphere will be powered by two next-generation Safran™ Silvercrest™ engines delivering over 12,000 pounds of thrust. The Silvercrest engines incorporate the latest advanced, field-proven technologies to offer unrivaled performance in its class in terms of direct operating cost, propulsion efficiency, reliability and environmental friendliness. These engines lower fuel consumption by up to 15 percent, reduce NOx emissions by up to 40 percent under CAEP/6 standards and half the noise footprint compared to other engines in its class.


According to Wikipedia, this engine will have a bypass ratio of

$$5.9 \, : \, 1 $$

which would certainly count as a high-bypass turbofan engine. Also see: What is the difference between a high bypass turbofan and a low bypass turbofan?