I have never seen it working. It didn’t work for me when I first tried months ago, and I haven’t checked again before today, but laymanan told me it was working for him 3 days ago. Discussed in this thread:
So if it was working for him 3 days ago, it sounds like it might be something within the last 3 days.
But I am already on firmware 1.0.68 from beta testing it.
Looks like the capability is still showing as a valid option for other cameras I just checked.