Update: The limited time offer is expired. See current Airline Credit card offers here.
As a recap there are great offers on the Gold Delta SkyMiles card, the Platinum Delta SkyMiles card, and the Gold Delta SkyMiles Business Credit Card which I have detailed below.
Delta SkyMiles for Amex Cards
Gold Delta SkyMiles® Credit Card from American Express
Platinum Delta SkyMiles® Credit Card from American Express
Gold Delta SkyMiles® Business Credit Card from American Express
Tomorrow is the LAST day to get these amazing offers on the Delta cards. I personally have the Platinum Delta SkyMiles® Credit Card from American Express because of the option to earn bonus MQMs after meeting the spending threshold.
Feel free to comment below with any feedback on the cards!