One of my clients happened to be a new AirTran FO(Another 'once in a blue moon' instance) fresh from training and he had quite a few things to say about the FL fleet:
-there has been confirmation that AirTran held a phone conversation w/ the people at Airbus. This came from a memo FL employees get.
-AirTran and Boeing have not been having a good relationship ever since the 717 debut. Part of this is that AirTran must use the TWA sim @ St. Louis and they charge- excuse me, rob FL every time FL uses it. Also, Boeing's interest for marketing the 717 have focused to Asia(where there's more money; keep in mind that Boeing sold the 717's to FL at a lower price)
-AirTran is looking for a medium haul aircraft that seats exactly as much as the current 717. (Obviously this would serve routes such as the ATL-LAX nonstop)
-AirTran may order a few more* 717's from the options OR
-Airbus could purchase all of AirTran's 717 and give AirTran a good number of Airbus narrowbodies (just like Boeing purchased the A340s for the 777s to Singapore in case you didn't remember). Quite frankly I think that would be the nastiest move Airbus could do to Boeing.
*=AirTran's exercising options expiration date is coming up. They currently have 50 on options.