Apple released Beta 3 or macOS Big Sur 11.3 yesterday. I have installed it. The installation was a typical Beta upgrade, it took quite a while with a couple of restarts. As far as I can tell, the only thing that has changed is bug fixes which is fine with me. I hope they fix some Finder wonkiness. Everything remains very snappy. All my main workflow Apps seem to work fine. I am anxious for 11.3 to be released.