NEW YORK & STAMFORD, Conn.--(BUSINESS WIRE)--Today, the Starwood Preferred Guest® (SPG®) Credit Card from American Express unveiled its new design. Sporting a lux purple color, the enhanced cobrand credit card is now packed with even greater value. Beginning August 11th, Card Members will receive new benefits that deliver more ease and convenience. For more information on the Starwood Preferred Guest® (SPG®) Credit Card from American Express, please visit americanexpress.com/newSPGCardbenefits.