We will be rolling out COBOL 6.x in the near future, and want to make sure that XCOM 12.0 will not be affected.
No reported issues.
XCOM itself does not use COBOL in any way.
Other considerations for COBOL upgrade:
1. XCOM does have an API Programming Interface for COBOL: CA XCOM Data Transport for z/OS 12.0 > Using > The XCOM Programming Interface. However, for any API program written in COBOL that calls XCOM, please be aware that XCOM is not responsible for the user-written code if there is a problem.
2. If user exits for XCOM have been written in COBOL, similarly there is no support for user-written exit code particularly any code written in a language other than System z Assembler.