https://github.com/python/peps/blob/master/pep-0012.rst now has a complete list of header fields along with format clues for easier copy-and-paste use in creating a new PEP. There is also a section template with one-liner explanations for what each section is for so people don't accidentally leave anything out. They are not in a single, unified template to copy to partially make sure people actually read the PEP before they start writing. :)