Hi, I'm pleased to announce the availability pandas 0.21.0. This is a major release from 0.20.3 and includes a number of API changes, deprecations, new features, enhancements, and performance improvements along with a large number of bug fixes. We recommend that all users upgrade to this version. Highlights include: - Integration with Apache Parquet https://parquet.apache.org, including a new top-level read_parquet http://pandas.pydata.org/pandas-docs/version/0.21/generated/pandas.read_parq... function and a DataFrame.to_parquet http://pandas.pydata.org/pandas-docs/version/0.21/generated/pandas.DataFrame... method, see here http://pandas.pydata.org/pandas-docs/version/0.21/io.html#io-parquet. - New user-facing dtype pandas.api.types.CategoricalDtype http://pandas.pydata.org/pandas-docs/version/0.21/generated/pandas.api.types... for specifying categoricals independent of the data, see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... . - The behavior of sum and prod on all-NaN Series/DataFrames is now consistent and no longer depends on whether bottleneck https://kwgoodman.github.io/bottleneck-doc/ is installed, see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... . - Compatibility fixes for pypy, see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... . - Additions to the drop, reindex, and rename API to make them more consistent, see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... - Addition of the new methods DataFrame.infer_objects (see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021...) and GroupBy.pipe (see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... ). - Indexing with a list of labels, where one or more of the labels is missing, is deprecated and will raise a KeyError in a future version, see here http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-021... . Check the whatsnew https://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html for detailed changes, including backwards incompatible changes http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#backwards-in... and deprecations http://pandas.pydata.org/pandas-docs/version/0.21/whatsnew.html#whatsnew-019.... Please report any issues you find on the pandas issue tracker https://github.com/pandas-dev/pandas. Binary packages will be available in the defaults and conda-forge channels shortly. conda install pandas Wheels and a source distribution are available on PyPI. pip install --upgrade pip setuptools pip install --upgrade --upgrade-strategy=only-if-needed pandas Tom