There's a list of breaking changes in the release notes: https://docs.djangoproject.com/en/dev/releases/3.0/#backwards-incompatible-changes-in-3-0 https://docs.

There's a list of breaking changes in the release notes: https://docs.djangoproject.com/en/dev/releases/3.0/#backwards-incompatible-changes-in-3-0 https://docs.djangoproject.com/en/dev/releases/3.0/#backward... It seems that there are very few breaking changes in Django 3 that will be relevant for application developers. Third-party packages poking around in Django's internals might have a slightly harder time, but it still seems very managable.