AA Press release includes:

“The A321neo is scheduled to begin flying customers April 2 between Phoenix Sky Harbor International Airport (PHX) in Arizona and Orlando International Airport (MCO) in Florida. Once the company takes more deliveries, additional routes will include PHX–Ted Stevens Anchorage International Airport (ANC) in Alaska over the summer, and PHX and Los Angeles International Airport (LAX) to Hawaii later this year as the A321neo begins to replace retiring Boeing 757s. The A321 is already a versatile aircraft, and the A321neo (which stands for “new engine option”) adds about 400 nautical miles in range thanks to improved fuel burn from the new engines, putting additional destinations within reach.

American is taking the “Cabin Flex,” or “NX,” option of the A321neo, which has a new door configuration. The A321neo is part of the order for 460 aircraft placed by American in 2011, which also included 100 Boeing 737 MAX aircraft. The aircraft from that order have transformed American’s fleet into the youngest among U.S. network airlines.”

See the cabin diagram below.