Effective with the first issue of 2017 (Lunar New Year: Year of the Rooster), there are new addresses for submitting first day covers for servicing. For non-dealers and any submissions without USPS Stamp Fulfillment Services work orders, the format is
New FDC mail-in address for non-dealers:

FDOI-[name of issue]
Stamp Fulfillment Services
8300 NE Underground Drive, Suite 300
Kansas City, MO 64144-9900

If a particular type of cancel is desired, such as the Digital Color Postmark (DCP), that should be indicated in the address for fast processing, as such:
New FDC mail-in address for non-dealers:

FDOI-[name of issue] DCP
Stamp Fulfillment Services
8300 NE Underground Drive, Suite 300
Kansas City, MO 64144-9900

Dealers with work orders should use this address:

USPS SFS Cancellation Services – Dealer Processing
8300 NE Underground Drive, Pillar 210
Kansas City, MO 64144-9998

The major differences are no name of the issue, “Pillar 210” rather than “Suite 300;” and the ZIP extension.

Collectors and dealers alike who have questions may contact Celia Rodriguez, the Customer Service Specialist for Cancellation Services, at the Pillar 210 address, ☎ {816} 545-1345, or ✉ e-mail Celia.Rodriguez@usps.gov

(Celia is shown here hard at work at the USPS cancellations booth at World Stamp Show-New York 2016.)