PROD-I-500 Inform Users if Newer Office Add-Ins Exist

I spent quite a bit of time the last couple days with Support figuring out why my Lookup PowerPoint Add-In was loading so slooooooowly. Eventually, we determined I was not on the most recent set. Having deleted the existing, and re-installed new ones, it now runs much faster. Great! Except...how would I have ever known that I was not on the latest Add-Ins and that newer ones existed? This is very likely to be an issue for customers using the Add-Ins. I believe we need to find a way to inform users (or more likely, Admins) that newer