UPDATE: I’ve just realised it doesn’t quite do what I just said. It closes up the gap in the photostream, yes, but doesn’t push in the next image from the next page. Oh well.
UPDATE: I’ve also just noticed photostream editing of titles and description has changed for the better too – so you can now tab from one box to the next. Clicking on the title box opens both of them, as in a form. Streamlining is nice isn’t it?