The editors are now comfortable to use on a small laptop too: the post text field no longer gets squeezed down to a couple of lines, and the Generate button stays in place while you scroll. On a short screen the editor window is taller and the spacing tighter — the text size is unchanged. On a large monitor everything looks exactly as before.
If your migration is still being prepared, you now get an email automatically as soon as you can start it — no need to keep checking the page.