As we hear from the communities, OBIEE 18.104.22.168.1 has been released on 20th of April ( see here ).
As stated by Ian there is some background info that needs to be taken into consideration:
Who Should Apply This Patch
NOTE: Customers who are currently using a version
earlier than Oracle Business Intelligence Enterprise Edition 22.214.171.124.0
should not apply this patch.
Important Information for Customers using Oracle Business Intelligence Enterprise Edition Suite version 126.96.36.199.0
Business Intelligence Enterprise Edition customers currently running
version 188.8.131.52.0 may encounter patch conflicts if this patch is
A patch conflict occurs when two or more patches have
some files in common but contain independent fixes, resulting in a roll
back of previously applied fixes. It is very important that
customers currently running version 184.108.40.206.0 pay attention to any
notifications regarding conflicting patches presented by Opatch during
application of this patch, as these patches will be rolled back if patch
application continues. Any patch rolled back due to the application of
this PSU must be re-built for this patch before you can reinstall that
Open a service request with Oracle Support to request a merged patch if required.
Thanks for sharing this important bit of info, Ian.