Yes, I see the same thing when I go to the Options window - Advanced panel in Firefox 28 Beta, select the Update tab, then click on the Show Update History button and finally click on Details (See my screenshot).

The people who answer questions here, for the most part, are other Firefox users volunteering their time (like me), not Mozilla employees or Firefox developers. I'll escalate this to see if a Mozilla employee can look into the matter and possibly file a bug report.

Hey Schiavini and Alice, I will send an email out and create a bug to see who develops this.

Thank you both! When you've created the bug, please send us the link so I can mark the question as answered.

Bug 971351 was filed for this. It has now been fixed and the original URL now works:

https://www.mozilla.org/en-US/firefox/28.0/releasenotes/

@Paul McLanahan Thanks for the bug fix and for your followup post here.