Meh, not fable/sol tier:

https://www.youtube.com/watch?v=LSlV206xPqM

If anecdote is data, then here's another point:

https://nitter.net/synthwavedd/status/2077537805715005724#m

(As an aside, I don't know how it was professional of Arena to unmask an unreleased cloaked model on their platform. Also practically, upstream could have been A/B testing multiple variants under same endpoint, casting validity of such pre-announcement tests into question)