The highlights of these release are interoperability of InferenceData and the new xarray.DataTree object and automatic inferring of dimension names from plates in the numpyro converter.
We have also done more testing of the arviz.preview module. Take a look at the migration guide if you want an early peek to the changes and improvements to come. You can treat arviz.preview as a beta release of ArviZ 1.0 so use carefully and keep an eye on the development. We hope to have a release candidate available for wider user testing in a few months.
Full changelog available on GitHub.