Interesting. Only 2 new type illuminators. I'm starting to doubt that they are illuminators at all. Rather midcourse update datalinks for missile with active radar terminal guidance.
There are two more in the back with a slightly modified hanger housing. The hanger have their edges bezeled, and the other two arrays are placed there along with a raised thick wall that could be harboring the back end electronics. Take a look at the top of the hanger door closely and note the corner bezels that are not present in the other 054A.