You won't be able to book Premium Economy until early 2017. But, you may be able to experience Premium Economy seats and service before then if you fly from Dallas Fort Worth (DFW) to Madrid (MAD) or Sao Paulo (GRU).

Starting July 10:

Book travel for November 4 or after from DFW to MAD or GRU
If a seat is open in rows 9-11, choose it (fees may apply)
If you've already booked travel for these dates, find your trip and select 'change seats' to move to Premium Economy.
Elite access

Until Premium Economy is available for sale, fees will be based on AAdvantageŽ member status:

Platinum & Executive Platinum members enjoy complimentary access
Gold members pay 50% of the fee or receive complimentary access within 24 hours