New Add-on: Red Carrot Notes
If there’s an itch, you scratch it. Andie Fairlie (Red Carrot) did just that.
He came up with Red Carrot Notes, an ExpressionEngine field type that lets you put dividers (with copy) between fields in an ExpressionEngine publish form.
There are three options for each field divider: title, description, and color, so you can customize it exactly how you want. On Twitter, Andie mentioned that the field functions just like any other field, so you should be able to resize it, reorder it, etc.