Read the letter, the A330-300's will be starting retirement in 2017 and will be done by late 2018, the E190's will be retired by the end of 2019. American Shuttle will be remaining but no idea yet on what aircraft will be used, or if there would be another aircraft order down the line. They also announced accelerated retirements of the 767-300, leaving 17 of the youngest ones in 2018.

The note I found interesting was nothing was said about the 757's. I know the domestic ones are being retired at the moment but nothing yet on the international ones, maybe they want to look at the A321LR first?