This announcement will help SEA-based fliers deciding whether to stick with DL or switch to AS. Since AS offers many more direct flights out of SEA than DL, I've been tempted to jump ship many times. If DL is going to continue adding service in SEA then I am leaning towards staying the course. So far the DL-AS rivalry has meant a drop in fares and increased service so I'm definitely not complaining. Announcements like this remind SEA-based fliers that DL is serious about increasing their presence here.
The marketing campaign has also been vigorous. Both are frequently taking radio spots. They also competed for the Seahawks endorsement: DL is the official airline of Seahawks, while AS is endorsed by quarterback Russell Wilson. The rivalry continues...