Ok, well, no more HTML, but...
(Still) Had to use a flag for Dark pages. I see no Collections nor a flag for it. And, for those who thought HTML would linger or could run side-by-side... the suggestion that one would replace the other is & was correct. So, no Collections & no Set aside & no Dark without a flag. Hmmm Hopefully, we can expect things to show, soon. We know from the betas that they should arrive, soon.
I have, also, tested the app icon to Edge when pinned thing. The specific icons are not holding! They are changing/morphing into generic Edge icons. And, here, no exceptions, all (sites) are doing the same.