User blog comment:Rupert Giles/Prototype for a new article layout/@comment-452-20141211193256

In the example image, it looks very much like the ad is now placed above the infobox.
 * Removing the Right Rail

For many wikis, the infobox contains vital introductory information about a subject.

Both on Wikia, and Wikipedia, my eyes immediately focus on the infobox when opening an article, so the presence of an ad... oh, nevermind, I now understand exactly why you're putting an ad there - well played.

edit: I call complete BS on this.
 * The intention behind removing the right rail is to bring your content front and center

The intention behind removing the right rail is clearly to bring the ads front and center by embedding them in the content.