Big Sur is presumably ready for release to the public, but it hasn't been released yet, Rita.

The beta testers are running it at this point, but nobody else yet.

Update: It's been released. You may awaken to it's having already been installed.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire