Which browsers support "Cache-control: immutable"?

As of April 2017 it is also supported in "classic" Edge

As of February 2017, Cache-Control: immutable is supported by

• Firefox (https://bugzilla.mozilla.org/show_bug.cgi?id=1267474) since Firefox 49
• Chrome (https://bugs.chromium.org/p/chromium/issues/detail?id=611416) since Chrome 54 They aren't implementing this.
• Safari (https://bugs.webkit.org/show_bug.cgi?id=167497) in Safari Technology Preview 24.

It is also listed on MDN and Can I Use ... ?.