Project: QGIS
Version: 3.0.0
All user settings/plugins, etc are now loaded from the app data location for each platform and no longer .qgis3/2. Settings and plugins in each profile are now isolated from each other.
This allows for different runtime setups depending on what the user needs, e.g test, prod, demo, etc
Profile menu allows for switching between profiles or creating new ones.
This feature was developed by Nathan Woodrow