An "update" regarding these fonts typically signals a change in how a printing device or software library maps, embeds, or renders these specific typefaces. This write-up explores the technical definition of these fonts, why they are updated, and the impact of these changes on document workflows.
Based on your query, which appears to refer to the common naming convention for cidfontf1 f2 f3 f4 f5 f6 updated
In Adobe Acrobat Pro 2025: