so it would have a separate IRST unit?
Separate. One of the biggest criticism I heard of the EOTS/DAS on the F-35 is the IRST aspect(can't confirm if this is true or not). I think maybe because of that TAI and TurAF decided to go with a separate unit on the nose. I do not see another reason to go with an separate unit if the method used on the F-35 was satisfactory to the TurAF.