The latest update for Revit 2020 has a few new enhancements to offer, including: 

These, along with other enhancements and fixes, can be seen from the update release notes.

The update is approximately 355 MB and titled Revit 2020.1 Update. This is a recommended update.

Note: After applying the Revit 2020.1 update from the Autodesk Desktop App, the Structural Precast Extension for Revit 2020 will become available. It is recommended to apply this update as well.

Revit 2020 update 1 now available