American Express has recently announced to make its biggest investment ever in Platinum Cards, here are all the details related to American Express credit cards

American Express (NYSE:AXP) on Monday said that major updates for its U.S. Consumer and Business Platinum Cards later this year will be its largest-ever investment in a card refresh, more than 40 years after it introduced the cards.

The annual fee for the Sapphire card will jump 45% to $795. Amex did not say if there would be a fee increase.