Maybe Delta is waiting to see how many actually leave vs. simply making threats to leave after the recent announced changes so that they can save even more money on shipping, handling, etc? Yeh, right

Otoh a good excuse if they needed one was that the packets were stuck on a plane and lost along with luggage during the recent storms and only now are being found? Ah, not sure about that either

Or as others have indicated, its not quite March yet so watch those mailboxes of so inclined.