The USAF states that the project "uses high-fidelity models to troubleshoot design, assembly, maintenance, and sustainment before physical systems exist." This new technology is meant to cut down the manufacturing time and increase military jets' production, giving them at the same time the most advanced digital capabilities.
The USAF specifies that the NGAD is an advanced aircraft program that will use a Digital Century Series approach. This strategy allows the military to adopt commercial practices for key design activities before the physical part is manufactured.
The report says that the Next Generation Air Dominance is meant to accompany the F-32 and the F-22 Raptor:
"Designed to complement the F-35, F-22, joint, and partner forces in the Air Superiority role, Next Generation Air Dominance is an advanced aircraft program for the development of penetrating counter-air platforms with multi-domain awareness, agile resilient communications, and an integrated family of capabilities."
However, the USAF did not disclose the prototype or its characteristics. What they did give us is a preview of the concept, a diamond-shaped aircraft that does seem to have the look of a fighter jet. The jet also features a bubble canopy, two engines, and two vertical stabilizers. We don't know if that's the aircraft's final look, but we are hoping to see it being revealed soon.