User blog comment:Brandon Rhea/Wiki Modernization Stage Two: Page and Article Headers/@comment-3398493-20170510143904/@comment-20644-20170514183239

It's not possible to update right now. What you see on select communities is a test version of the product, which we used to study how the new header performed. We're not adding that test version anywhere else anymore but we'll be releasing the final version to all wikis in a few weeks.