JF-17 in other areas have also been improved. Aerodynamic improvements have increased their mobility, as well as the ability to engage in a variety of tasks. The small batches manufactured JF-17 is likely to represent the ultimate models of aircraft body Design. Particularly noteworthy is the central fuselage of DSI inlet used in the JF-17 has brought some stealth capability. Other improvements include reduced body weight, through redesigned interior more space has been created, an increase of the fuel carrying capacity, and increased range. Aircraft will achieve speed of 1.8 Mach. After the the improved engine, aircrafts performance will further be enhanced. The new information shows that the current design will be frozen for the next three years before some further changes are introduced.