Funny, yes - likely, no. SK is now just doing what they should have done in the first place: have that route from CPH.
There just is not enough demand from ARN to support such routes, as SK has experienced every time they have tried (PEK, BKK and now HKG comes to mind).

Still hoping for CX to stay though! Would be interesting to see what happens if they step up the frequency and make it a year-round route to compete directly with SK.