5.0.3 beta and return code in XML file

This product's documentation has always stated "the only way to truly know if a script executed successfully is to check the return code / error code" and "one can not truly determine success / failure from within the XML log".

Do I understand that with the new Beta 5.0.3, that the XML log can now be used to fully evaluate the success of a session / command set?

Thanks

Yes, that's true.
Documentation has not been updated yet to reflect this.