This is a prerelease to preview the changes in 3.0, the next feature release. Prereleases are an opportunity to test and update your projects early before the final release.

pip install -U --pre Flask-SQLAlchemy

There were significant changes in https://github.com/pallets-eco/flask-sqlalchemy/pull/1087, see the changelog for a full list. Many of those changes will raise deprecation warnings, but it was not feasible to implement warnings for some things.

• Changes: https://flask-sqlalchemy.palletsprojects.com/en/latest/changes/#version-3-0-0
• Milestone: https://github.com/pallets-eco/flask-sqlalchemy/milestone/2?closed=1