The 7.2.1 release is a patch to provide a working full build. See the changelog for 7.2.0 for new features and fixes since 7.1.
See below for a complete list of features and fixes.
- Use custom query function to replace missing taffydb query features (by @ahocevar in openlayers#14398)
- Updates for the 7.2.0 release (by @openlayers in openlayers#14396)