User blog comment:Brandon Rhea/New Page and Article Headers: Official Release Date/@comment-26063280-20170522223355/@comment-20644-20170522225001

Correct, since this is a core site design, we will no longer be offering the old and outdated header. That will be completely replaced by this one.

One of the nice things you can do with the theme designer is add a header image, that way the header looks even more attractive and not like an eyesore.