I noticed a day or two ago that something is messed up with DL connections to ARN, too. Only the awful KLM flight (I greatly dislike red eyes that arrive in the destination city before my departure city bed time, and KL 656 will be departing here at the uncivilized hour of 2:50pm) from MSP connects to flights to ARN next fall.

I don't know what the problem is (ummm, I.T. dept!), but I can't imagine DL has given up on connecting their two later DL metal flights to AMS to get one to CPH or ARN.