See some related bug reports:

• bug 1075457 - Implement basic shapes clip-path clipping for HTML elements
• bug 1247229 - Ship basic shapes clip-path clipping

Please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html

Note that this feature is still hidden behind a pref that is defaults to false in all Firefox versions including the Nightly channels.

• layout.css.clip-path-shapes.enabled

Hmm sorry but I dont see a concrete answer to my question there. Summarizing, there is no date yet?

Hi

It looks like there is work underway to support that feature in Firefox. Once complete, that feature will be made available.

Difficult to call a date at this stage, but please feel free to monitor those two bugs to get an idea of progress.