You can bet the "speculation" will morph into fact by the MSM. And it is a distraction. The issue is the substance in the emails and whether they are authentic, not how they were unearthed. If there was no there there, it wouldn't matter how they were discovered.
The distraction will become the story. This is an old template, and it works - the press controls what it puts out.
Jennifer Granholm even drags Manafort in (by name), and says it is plausible that Manafort had a role in the hacking and leaking. "I have no proof," but here is an idea ...
Carol Costello says "even more people will be stepping down, but it will be after the convention." Hello! Wasserman Schultz only announced, she has not left her DNC role to do her new assignment doing the same job directly for Hillary.