And to be completely honest, DL has a tendency to swap aircraft types literally up to departure time. Don't bank on a certain config to be there, because chances are it won't. Choose seats where you think would work out best for you and not based on what is showing on the computer screen right now. Up until last year, it was the same thing with DL and the 757. You just never knew what variation you were going to get. And with legs up, I really hope you're not planning on putting your feet on the wall.......