With update 1.9.3, will we be notified of updates from third-party purchases (outside of the Marketplace)?

I found this in the 1.9.3 release notes: Improved notification system for content bought outside of the marketplace existing in the Community folder

Does that mean if we purchase an add-on outside of the MSFS marketplace, we will be notified of updates? Does it apply to all purchases (including those that the Marketplace doesn’t have), or only those that are available on the MSFS marketplace?

This is a poor marketplace compared to Simmarket. Nothing new for weeks.