Ok, I've been looking for this to no avail. I would love a way to have a "Next Page" link while editing a page in the admin page editor. I have about 120 pages and having to go back to the All Pages screen and find my next page is a pain while making multiple updates.
I tried admin-post-navigation:
But this does not sort the next pages in order of the hierarchy of my site, it's all out of my visual order.