Data protection authorities of many EU member states have published draft lists of data processing activities that would trigger the need for a data protection impact assessment in that country.
The European Data Protection Board weighed in on the drafts, you can find its opinions here. And IAPP Westin Fellow Müge Fazlioglu, CIPP/E, CIPP/US, has written an analysis of the opinions here.
IAPP extern Darya Balybina, CIPP/E, CIPP/US, CIPM has written an analysis, "What is and what isn't subject to a DPIA under GDPR? An update", found here.
Please note this resource was last updated 16 December, 2019 and is no longer being updated.