Hi,
If M+R publishes an update to the study, we'll update the article as well.
The other information you asked about in your post was outside of the scope of the article, but the people at M+R may have what you're after.
Here is a
contact list for the organization. I worked with the eCampaigns department, but feel free to email me off-list if you'd like a direct contact.
Let us know what you find out.