They specifically mentioned it by name in the keynote, and even have a screenshot of it running on Big Sur. https://www.youtube.com/watch?v=GEZhD3J89ZE&t=6006 h

They specifically mentioned it by name in the keynote, and even have a screenshot of it running on Big Sur. https://www.youtube.com/watch?v=GEZhD3J89ZE&t=6006 https://www.youtube.com/watch?v=GEZhD3J89ZE&t=6006 (1:40:06) if the timestamp doesn't work