Thanks for that But I am asking for a feature button here, so that non tech savvy people can also switch between new UI & old UI easily.

delete cookie

Deleting cookies or local storage does not work.

The change log says: "If you get v1, clear your cookies, refresh, and if the random algo is on your side, you'll get group B (v2)."

So, there's also a random element to it. I had to clear my cookies a couple times, and then I got v2 again.

Sounds interesting 😀😀😀 (instead of just adding a tiny button either on the header or footer)