User blog comment:Brandon Rhea/Wiki Modernization Stage Two: Page and Article Headers/@comment-1474707-20170316194102/@comment-20644-20170316201411

We're playing around with the placement of those buttons to see if we can boost performance on them at all. It's not necessarily a final placement and it could still change after the test.

And yeah, those are categories above the title. They'll still be on the bottom of the page too, but we want to see if making them more prominent leads to an increase in their use as a navigational tool for readers.