Ours is opening on 15th June but only for children who will be starting school in September. They arent expecting children and teachers to social distance. In our preschool they're putting the kids in small groups of 5 who all do the same activity at the same time, with cleaning in between. They're also shortening the session to allow for deep cleaning between sessions. It all sounds sensible.
They've also told us they hope to open as normal in September.