I have filed #1311771 for the issue mentioned above.
This update will break all FreeIPA or Dogtag installations, as some classes were moved around into different jar files. Anyone that installs this update and tries to restart their Dogtag or FreeIPA services will have a failure when tomcat starts up with the following error in the journal:
Error: Could not find or load main class org.apache.catalina.startup.Bootstrap
I will file a bug about this, but I don't think this is something that should be updated in F23 since it's not backwards compatible and breaks people's installations.
I tested the new NTP changes in the client side packages, and they worked well.
I tested this on F22 i686 with FreeIPA. I was able to successfully install IPA, and created a user, created a service, and issued a certificate.
This worked well for me testing the SAML IdP.
The incorrect source tarball was used for this build. It is missing some of the fixes advertised in the changelog.