The indictment was filed under seal, so why does CNN and the New York Times know what's in it?
There are hints in the court record which, despite sealing of an indictment, would give a determined investigator enough information to speculate on the charges in the grand jury. The DA office probably just provided the media with some top-line updates on the process so that there would be a general understanding of the big news to head off speculation or a leak.