Can I use “HDMI 2.1” in my marketing?
You can only use version numbers when clearly associating the version number with a feature or function as defined in that version of the HDMI Specification. You cannot use version numbers by themselves to define your product or component capabilities or the functionality of the HDMI interface.
And please note that NO use of version numbers is allowed in the labeling, packaging, or promotion of any cable product.
Please check the Adopted Trademark and Logo Usage Guideline for a complete explanation of the policy, available on the Adopter extranet and the ATLUG document.