Represents a change to the checklist content that does not affect the underlying rule/value configuration guidance put forth by the content. A scenario that would require a new checklist revision is when SCAP content is created for a prose checklist. This revision would change the checklist's content type from Prose to SCAP Content. A new checklist revision would be created to accommodate this change, while still maintaining the Prose checklist revision for interested parties.
Sources:
NIST SP 800-70 Rev. 4