User blog comment:Brandon Rhea/New Page and Article Headers: Official Release Date/@comment-26388711-20170614052908

So far, the things I oppose are:
 * Navbar layout. It should be identical to the old version, but the look is good.
 * JS/CCS Customization. Some features should still stay effective for all users in a given wiki.

I am okay with both the old and new navbars. (A full review will come up soon)