Notice just posted on the DL site:
Advisory: SkyTeam partner Air France has advised that a national strike of the pilots in France will impact travel November 14-17, 2008. Air France anticipates severe disruptions to flight operations and is forecasting up to fifty percent of their flights may be cancelled during this time period. For detailed information and updates, go to Air France's Web site.
Delta customers who are traveling to/from/through Paris, France - Charles De Gaulle (CDG) airport on Air France operated flights are encouraged to check their flight status before traveling. Delta has also issued a ticketing waiver for customers traveling on or connecting to/from Air France operated flights.
Check here for your options.