The DNC leak taught the DNC and the Obama administration a lesson. They tried to ignore it, but a couple higher-ups actually apologized for their participation, ruining any chance they might have to later deny the content of the emails was authentic.
So now they are getting out in front of the next leak. They are discrediting it by planting the story that the Russians did it, and the Russians might alter or fabricate documents.
We don't know what it will be, but we know it was those damned commies.
Go back to your entertainment, citizen. Nothing to see here.