I would suggest not jumping the gun on this, and wait until the report is submitted.
I agree. So far, this has been on CNN and in the WP, I think. If he were being investigated for things that happened under the Toon regime, I doubt they'd be so anxious to run with it.
OTOH, Rummy did send a guy to replace him as needed, so he may be aware that it does not look good for Franks. We'll just have to wait and see.