French judicial procedure is only very exceptionally held in camera, and this process is not one of those.
It has perhaps gone quiet because the process is methodically and attentively taking its course, and the court is knee deep in expert evidence which inevitably is a little bit contradictory, depending on whose expert is being heard.
My most recent update is now a few days old, but consisted essentially of an expert witness averring that the fire broke out before the aircraft reached the site of the alleged titanium debris, but upon being challenged, was unable to offer any alternative explanation for the fire.
Patience is called for. The level of detail being examined is minute.