Thanks to everyone who answered this question.
In Jessica Ridgeway's case it was never divulged until the trial that her clothing and glasses were found in the back pack which ARS discarded in an opposite direction as a red herring. I can see LE withholding such information re the clothing from the public / keeping this information close to the vest if in fact it was determined that these clothes belong to AJ, as was done in Jessica's case. (I hope this turns out to be nothing like Jessica's case of course!). Converesly, I would also think that if it was not her clothing they might indeed disclose this to the public, as I've seen in other cases where LE comments that items turned out not to belong to the missing person, for instance the glasses found in Jessica Heeringa's case. I wonder if they have been directly asked to comment publicly on whether or not these clothing items belong to AJ, or if testing on these items has been completed.
The aspect of items of clothing found, and whether or not these belong to AJ, is obviously a key part of this case, imo.