It's been sensationalized since February and this "new evidence" started with Fox59 which never impresses me BTW. But the original story from Aug 14 here
Lead detective in Delphi murders confirms police have more audio from phone, DNA evidence
Doesn't exactly say that IMO.
The actual statement reads:
BBM
"Police tell us they have conducted hundreds of interviews, followed up on thousands of leads and served dozens of search warrants
to find clues that the killer
may have left behind, including DNA."
"to find" "May have left" including DNA. Well naturally. But it says to find and may have left.
To me that's not specific enough for these other outlets to borrow the story and make the DNA a certainty..
Previously the sheriff clarified this ongoing story of DNA here ;
Sheriff clarifies reports of DNA evidence
JMO