update changelog

models/CHANGELOG.md

@@ -18,6 +18,7 @@ Keep it human-readable, your future self will thank you!
 - Reduced memory usage when using chunking in the mapper [#84](https://github.com/ecmwf/anemoi-models/pull/84)
 - Added `supporting_arrays` argument, which contains arrays to store in checkpoints. [#97](https://github.com/ecmwf/anemoi-models/pull/97)
 - Add remappers, e.g. link functions to apply during training to facilitate learning of variables with a difficult distribution [#88](https://github.com/ecmwf/anemoi-models/pull/88)
+- 'predict\_step' can take an optional model comm group. [#77](https://github.com/ecmwf/anemoi-core/pull/77)
 
 ## [0.4.0](https://github.com/ecmwf/anemoi-models/compare/0.3.0...0.4.0) - Improvements to Model Design