User blog comment:Brandon Rhea/Wiki Modernization: New Ad Layout is Now Live/@comment-28083312-20171005224827/@comment-20644-20171005234508

The ad layout on the right rail is different now, so custom modules may need to be updated to reflect that. As always, we can't guarantee that custom scripts or modules won't have to be updated when we make changes.

What we've been able to do with this new ad layout is decrease page load time by slashing 30% of the ads on the page. That’s 30% fewer calls that the page needs to make in order to load ad elements. So page performance has been increased by 30%. That's a pretty big change!