I think it would be nice to have the ability to check display name changes from the forum post, may"e a link next to the username, or add a separate button underneath the view content when you hover your cursor over it. I believe it was also possible to view the changes without opening the profile page in the previous version (although I don't have the best memory so I could be wrong).

I'll ask our super awesome techie about this. :) He manually added it in the previous version and I think he just forgot to add it again.

The link should be there now (I've moved it to the right though).