Android 11 Developer Preview program showed that we would get several previews before a public beta release some time in May. Google has now revealed that the first Android 11 Beta will arrive in June with a special online presentation.
This is the replacement for Google I/O, which was canceled due to coronavirus. The new event is called “The Beta Launch Show” and will take place on June 3 at 8AM Pacific (11AM Eastern).
Source: Android Developers