> Holding the case in public, and publishing the contents of the phone in public are very different things
And saying they "can't comment" as the GP suggested is different to publishing contents of the phone. They could easily comment on whether they found anything or not, whether it had any importance to the case, the nature of what they might have found without revealing specifics.
If they do simply say they "can't comment" then we will know they are lying, because because they already did comment, quite voluntarily: they just held a whole court case in public about it which revealed all kinds of gory details. A court case which Apple asked to seal and the FBI said "no, we want this to be public".