The images below are screengrabs & some panel-beating of the Gen. Khajefared - CEO of Iran Aviation Industries Organization - interview.
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What is obvious from the center a/c is that its LERX and the rest of the wings looks to be similar to F-5/Kowsar. What does seem different to me is the slightly 'square-rified' intakes, and at a slight inclination.
Second from right is a section showing what appears to be an engine nozzle. Just to the rear, inside of the fuselage, looks something like this ɷ. Why does this look like provision for the fitting of two smaller engines. Certainly hope not.
Moving to the a/c to the right, clearly no cranked delta in evidence.
On the left of this image is a partial wing of a parallel Kowsar 2-seat assembly line.
View attachment 949192
What stands out the most here is the near horizontal dorsal 'extension'? that appears to hold from the rear of the c/pit that joins up at the rear with the exterior 'ducts'. This can safely be interpreted as providing space for a larger single engine.
If this is indeed the future go-to combat a/c of the IRIAF, then this TV interview, and images, will influence the regional aerial status quo for a long time to come.
Enjoy
P