For anyone with travel plans on Delta, I just received an email from them advising that there are no plans to change domestic schedules but that international flights may be subject to change. They also included the following paragraph:
Additional information can be found here Delta.com
Delta will provide flexibility for customers who postpone or change travel plans and for SkyMiles® members who wish to reschedule award travel. For more information on rescheduling travel plans, visit delta.com. As always, even though your flight plans may change, you can continue to earn SkyMiles with our promotional and travel partners.
Additional information can be found here Delta.com