It isn't "catering to curiosity". It's holding governmental authorities accountable. Records that are public need to be made public and can be with minimal effort taken to not hinder the investigation.
Our country was founded because we said to our government (England), "We don't like what you're doing. We are not getting what we pay for with our taxes." So we have a long, proud history of not just taking government's word for it.
At some point, with leads admittedly all dried up according to LE, they are going to be compelled to release some of what they're holding back, either by public opinion or by lawsuit.
LOL I certainly think it's nothing more than curiosity at work, at this point in time. After the case is adjudicated, then who knows. (But there is not a "right" to know everything, and idly peruse through investigative files, so there's that.)