The jump to version 5 introduced significant quality-of-life improvements over the long-standing version 4:
It is frequently used in geometry and art classes to demonstrate the relationship between 2D planes and 3D volumes. Version 5.0.8 "Completa" pepakura-disenador-5-0-8-version-completa
Improved shading and textures in the 3D preview window help users visualize the final product more accurately before printing. The jump to version 5 introduced significant quality-of-life