Nah I’m pretty sure it’s still lemmy. This page seems to say they are looking at moving to something else, but they’re still using lemmy for now https://docs.beehaw.org/docs/important-questions-decisions-and-reflections/beehaw-lemmy-and-a-vision-of-the-fediverse/

It’s not tangible evidence, it’s an extrapolation based on Meta’s previous actions. I mean, it’s still pretty convincing.

Although I do wonder if Meta would be able to get away with it legally. That might not stop Meta though.