Guidance from GMED Notified Body on significant changes in the framework of article 120 of MDR
The GMED notified body has published a guide on substantial changes: named Guidance document for the interpretation of significant changes in the framework of article 120: “Transitional provisions” of Regulation (EU) 2017/745. This guide addresses changes according to the article 120 of the MDR. It's a decision tree in the same vein as FDA guidances on deciding when to submit a new 510k.
As a manufacturer, your mission, if you accept it, is to answer "No" for all your products CE marked with the MDD.
For hardware, be prepared to place your design in the freezer.
For software, be prepared to place your design in liquid nitrogen.
The guidance is on the page on white papers of GMED website.