As of August 2019, the future of the electrically powered, fixed-wing aircraft Zunum remained in question, with no updates on the funding status of the program since a statement by Zunum Aero in December 2018 confirming that it had not been able to complete a planned funding round. The aircraft had been projected to enter service in 2022, but with hopes fading for a planned first prototype flight during 2019, this seems highly unlikely. Early backers Boeing HorizonX and JetBlue Technology Ventures have both withdrawn support from the program. It has received around $800,000 in financial aid from the state of Washington's Clean Energy Fund.
Zunum Aero has also established a partnership with the University of Illinois' Center for Power Optimization of Electro-Thermal Systems.
In May 2018, private charter group JetSuite announced its intention to become the launch customer for a 12-seat version of the aircraft. As of August 2019, it was unclear whether or not this agreement was still in place.
In October 2018, Zunum Aero reached an agreement with Safran Helicopter Engines for the French manufacturer to provide its Ardiden 3 turboshaft engine to provide power for the aircraft's electrical generators.