What's new in 1.2.5 (May ??, 2021)

These are the changes in pandas 1.2.5. See :ref:`release` for a full changelog including other versions of pandas.

Fixed regressions

Regression in :func:`concat` between two :class:`DataFrames` where one has an :class:`Index` that is all-None and the other is :class:`DatetimeIndex` incorrectly raising (:issue:`40841`)
Fixed regression in :meth:`DataFrame.sum` and :meth:`DataFrame.prod` when min_count and numeric_only are both given (:issue:`41074`)
Regression in :func:`read_csv` when using memory_map=True with an non-UTF8 encoding (:issue:`40986`)
Regression in :meth:`DataFrame.replace` and :meth:`Series.replace` when the values to replace is a NumPy float array (:issue:`40371`)
Regression in :func:`ExcelFile` when a corrupt file is opened but not closed (:issue:`41778`)

Bug in :meth:`GroupBy.shift` that would return different columns if fill_value was not None (:issue:`41556`)

.. contributors:: v1.2.4..v1.2.5|HEAD