Right now, Fortify SCA already supports a specific (outdated) version of COBOL: IBM Enterprise COBOL for z/OS 3.4.1 with CICS, IMS, DB2, and IBM MQ.
We are in the process of expanding and updating the COBOL coverage. We can't share roadmap details/timelines here in forum messages. However, there will be a roadmap video available as part of today's expert day, from noon CEST to end-of-day, which will cover this and other topics. If needed, also feel free to reach out to me directly at frans.buul at microfocus dot com.
Frans van Buul