Here's the press release announcing the addition of AeroMexico:

Press Release Source: Marriott International, Inc.

Marriott Rewards Names Aeromexico as its Newest Airline Partner
Friday August 15, 3:17 pm ET
Members Can Now Earn Miles at 31 Different Airlines


BETHESDA, Md., Aug. 15 /PRNewswire/ -- Marriott Rewards members can now earn Aeromexico Club Premier miles when they stay at over 2,800 Marriott International hotels in 65 countries. This latest addition brings Marriott Rewards' total roster of airline partners to 31.
Effective immediately, Marriott Rewards members who designate Aeromexico as their earning preference will receive:


Two (2) miles per U.S. dollar spent at:

-- Marriott Hotels & Resorts
-- JW Marriott Hotels & Resorts
-- Renaissance Hotels & Resorts
-- Marriott Vacation Club International


Or one (1) mile per U.S. dollar spent (room rate only) at:

-- Courtyard by Marriott
-- Fairfield Inn by Marriott
-- SpringHill Suites by Marriott
-- Residence Inn by Marriott
-- TownePlace Suites by Marriott
-- Horizons by Marriott


In addition, Marriott Rewards members can convert their Marriott Rewards points into Aeromexico miles at the following exchange rates:


10,000 Marriott Rewards Points = 2,000 miles
20,000 Marriott Rewards Points = 5,000 miles
30,000 Marriott Rewards Points = 10,000 miles
70,000 Marriott Rewards Points = 25,000 miles
125,000 Marriott Rewards Points = 50,000 miles


Based in Mexico City, Aeromexico is the country's largest airline. It operates flights to 47 destinations worldwide serving Mexico and from within Mexico to the United States, Europe, Asia, Central America and South America.

For information about Marriott Rewards or to enroll, call 1-888-MARRIOTT (627-7468); (801) 468-4000 in Latin America; 44 (0) 20 7584 5500 in Europe, the United Kingdom and the Middle East; (61) (2) 8298 5250 in Australia and Asia; and (81) 3 5405 1513 in Japan; visit the front desk of participating hotels; or log onto MarriottRewards.com.

Marriott Rewards points earned at over 2,800 hotels in 65 countries and may be redeemed for hotel stays, frequent flyer miles, car rentals, cruises, retail merchandise and more.

Marriott Rewards has been named "Best Hotel Rewards Program" by the readers of Inside Flyer, Business Traveler, Global Traveler, Travel Savvy, Executive Travel and BusinessWeek magazines.