What's new on the menu? Quite a bit actually, with the new Excel ribbon based interface for a start.
The old menu driven interface for the addin has been replaced with the user friendly Office style ribbon interface.
March 2015 update: The menu style interface has been superseded by the Office style ribbon interface. See this article for more information.
While earlier versions of Microsoft Excel allowed a developer to add their own menu to the menu bar relatively easily, the newer versions have thrown a bit of a spanner in the works when it comes to creating custom menus. It does not surprise me then that users often ask "where do I find Ian's Excel Addin after I have installed it? Fortunately, the answer to that is relatively simple.