Glad I registered.
The following was sent out today to those who registered:
Dear Traveler:
Thank you for registering for our Detroit - Madrid New Service Promotion. Due to the impact on travel demand caused by the conflict in the Middle East, the launch of this new nonstop service has been postponed indefinitely and this promotion has been cancelled.
We apologize for any inconvenience this may have caused you and have credited your account with 1,000 WorldPerks Bonus Miles. And don't forget, if your travel plans include Madrid this summer, Northwest and KLM continue to offer convenient daily service via our Amsterdam hub from 17 North
American gateways.
Thank you for your interest and we look forward to welcoming you onboard a Northwest flight soon.

Northwest Airlines