This release builds on 21.9.1, adding support for digitization and reconstruction of the ATLAS-P2-ITK-17 ("step 3", i.e. post Layout Task Force 2) family of geometries.
The main purpose of this release is for validation of the performance in the ATLAS-P2-ITK-17-06-00/InclinedAlternative configuration, which corresponds to the nominal "step 3.0" extensively studied in 20.20-series releases.