Summary
Announcement from 6/20/2020 doesn't seem to be correct. I still found many references to "whitelist" in the code.
Changing all sources will be relatively easy - the biggest issue are API endpoints that contain “whitelist” keyworld in their URLs - for them we must update: BE, acs-cli, lfx-gateway and all consumers accordingly.
See these Slack conversations for more details:

Summary
Announcement from 6/20/2020 doesn't seem to be correct. I still found many references to "whitelist" in the code.
Changing all sources will be relatively easy - the biggest issue are API endpoints that contain “whitelist” keyworld in their URLs - for them we must update: BE, acs-cli, lfx-gateway and all consumers accordingly.
See these Slack conversations for more details: