Last week Oracle BI Suite 22.214.171.124.0 has been released and that includes Oracle BI Publisher 126.96.36.199.0.
The new features introduced in Analytics Cloud Suite for both Data Visualization and BI Publisher are now available for on-prem. You can find the list of new features for Data Visualization here and for BI Publisher here.
Upgrading to Oracle Business Intelligence from 12.2.1.x to 188.8.131.52 is an in-place upgrade performed by Upgrade Assistant. Refer to the upgrade guide for details on upgrade from a previous 12c version.
Stay tuned for more updates.
Have a great weekend !