Quote Originally Posted by xlnitwit View Post
Although you will still need to late bind it if you have to support different versions of Office.
No he need to maintain only the 2010 version and when installed on 2016, the references will be updated. As consequently the add-in will not be opened on lower version this will not be a problem.
I speak from own experience - I maintain addin only on 2010, and then it is updated without problem on PCs with 2013 and 2016.
Added benefit is that with addin you can implement auto-update functionality. see http://www.jkp-ads.com/Articles/UpdateAnAddin.asp