Overall scheme
Invitation
Dates
Sample topics (not exclusive)
Talk format
Types of talks (lightning, regular, tutorial, sprint etc.)
How to submit
Should include details about materials (slide decks), code, copyright etc.
FAQ
Useful links
Call for proposals from the US PyCon http://us.pycon.org/2009/conference/proposals/
A much simpler one from EuroPyCon http://www.europython.eu/talks/
Even simpler one from Singapore http://pycon.sit.rp.sg/conference
'All the stuff above this line is example only and needs to be removed before drafting the actual thing'