Ann Clark published a great paper on the use of red herring arguments in response to the Seralini study – Intentional Disinformation about Seralini et al. – posted at http://www.cban.ca/Resources/Topics/Human-Health-Risks
CBAN also published a context piece. It has a handy comparison table! http://www.cban.ca/Resources/Topics/Human-Health-Risks/Seralini-et-al.-GM-corn-safety-study-in-context
Basically the new study was much more detailed than studies done by Monsanto, but its methodology is still being criticized. Go figure.