Originally Posted by
johnso29
The press release also says this:
The 30 A321s will expand Delta's existing fleet of 126 A320-family domestic aircraft. Delta's first three A321s are scheduled for delivery in the first quarter of 2016, with 12 more due in that year. The remaining 15 jets are scheduled for 2017.
This hints that the 320 airframe life extension comes with part of this. Not a bad thing!
It does not remove the possibility of them replacing the older 757s, though. Reality, johnso!