This is a simple modification that adds a what's new button to the bottom of the pages in XenForo. My users requested this on our site and I just thought I would share it with everyone.
There is an admin options panel to toggle which location the button is showin in.
It matches the theme of your login button that appears in the sidebar when a user it not logged in.
It requires no template edits and ads no MySQL queries so really is just a way to make it easier for users to navigate your site.
If you have any problems with it let me know!