Yes and No.

I want to agree with you (and I think the hype is usually way more than the actual change), but Southwest is almost 40 years old and they've never made an acquisition of this size nor have they ever before had another type of plane in their fleet.

I think they want you to believe this is plain vanilla M&A growth to get access to ATL and the east coast, but in reality, it will be the biggest challenge they've ever faced to integrate AirTran (fun to watch!).

That being said, I bet they wished AirTran was an all 737 airline. But they just don't have a choice, they can't retire 86 717s on the spot -- they'll be forced to fly them for at least several years.