Nevertheless, it remains the strongest case against any of the Jack the Ripper suspects. That’s why I said that these results would never lead to a conviction but if there were to be some grand reveal of Jack the Ripper, based on this and other circumstantial evidence, I’d put my bet down on Kosminski (although I’d probably also put a small bet on none of the publicly known suspects).
He doesn't because the DNA study was botched, not least because there is no reason to believe she ever wore the shawl. The supposed DNA match turned out to be a typo, because the work was so incompetent.
May as well test DNA from all the supposed Ripper letters -- even the handwriting doesn't match, apparently they have about as many authors as there are letters, which is a little disquieting.
Last I knew, Scotland Yard wouldn't release the names of the various informants from the nearly 140 year old investigation, claiming it could endanger lives. That's good and nuts.