so what should be done, continue as present or a roll back to earlier restrictions, and for how long?
My opinion, although I'll repeat again that I essentially know nothing at all, is that right now it would feel somewhat churlish to further loosen restrictions on the 21st June, but the data gathered over the next week-10 days is going to be key in that.
Specifically, we need to understand more about how these Delta infections convert into hospitalisations and deaths.
Gut feel, for me, is to look to delay further loosening until the schools break up for their summer holiday, around the 24th July down here, as school transmission does seem to be a key driver here and that can't happen when the kids have broken up.
I'll repeat though: I know nothing about epidemiology and public healthcare, and I don't envy those who have to make the big decisions on this stuff.