Yes, from PEP 760's draft: https://peps.python.org/pep-0760/

> This change is not backwards compatible. Existing code that uses bare `except:` clauses will need to be modified. To ease the transition:

> * A deprecation warning will be issued for bare `except` clauses in Python 3.14.

> * The syntax will be fully disallowed in Python 3.17.

> * A `from __future__ import strict_excepts` will be provided to invalidate bare except handlers in earlier versions of Python.

> A tool will be provided to automatically update code to replace bare `except:` with except BaseException: