Good question.
Yes, or course the Engineering Studies syllabus will eventually change, but at the moment, NESA has its hands full with a huge number of simultaneous projects in primary and secondary education that have to be bedded down.
Lets face it, fundamentally the scientific principles of mechanics, kinematics, materials science and fluid mechanics have not changed, so these topics are just as relevant as ever.
The nature of the profession has not changed much either. Engineering Report writing should stay in the syllabus.
Where the syllabus has fallen behind is the applied stuff - engineering communication, electrical engineering, telecommunications engineering and manufacturing engineering. These topics are crying out for an update.
For example, I believe the ability to use computer-aided drafting (CAD) should be made mandatory in Engineering Studies.
Telecommunications should be taken out to make room for Robotics.
Students should learn about the software/hardware interface, sensors, control systems, embedded systems and machine learning. That would be a really worthwhile update.
I would be interested to read the opinions of other experienced engineering teachers of what they would like to see in the new syllabus.