I noticed a lot of the links for the release notes point to empty pages. In Blender 2.79b, when you got to Help -> Release Log, it points you to a page on the wiki which doesn’t exist. https://wiki.blender.org/wiki/Dev:Ref/Release_Notes/2.79
Changing the address to https://wiki.blender.org/wiki/Reference/Release_Notes/2.79 shows the proper release notes.
The same problem is present on most of release notes pages on blender.org, for example on https://www.blender.org/download/releases/2-76/ any Read more> link points to a non-existing page. In addition, release notes on the wiki have their link and images missing (again, presuming the changed address is the cause).