AmEx Platinum 信用卡有多個版本，現在還能申請的主要有以下3種：
以前這幾個版本的開卡獎勵互相獨立，可以把每個版本開個遍同時把開卡獎勵都拿到。
今天（2023/08/17）開始，AmEx 更改了條款，現在各個版本的白金卡開始互相影響開卡獎勵了。以普通版白金卡為例，現在它的開卡獎勵限制條款是這樣的：
You may not be eligible to receive a welcome offer if you have or have had this Card, the Platinum Card® from American Express Exclusively for Charles Schwab, the Platinum Card® from American Express Exclusively for Morgan Stanley or previous versions of these Cards. You also may not be eligible to receive a welcome offer based on various factors, such as your history with credit card balance transfers, your history as an American Express Card Member, the number of credit cards that you have opened and closed and other factors. If you are not eligible for a welcome offer, we will notify you prior to processing your application so you have the option to withdraw your application.
意思是如果開過任何一個版本的白金卡，那麼就不能拿普通白金卡的開卡獎勵了。其他版本的白金卡也是同理。所以以後各個版本的白金卡之間需要選擇其一來拿開卡獎勵了，三個版本當中往往普通版白金卡是獎勵最高的。其他版本的如果有需要可以開，只是拿不到開卡獎勵了。
於此同時今天AmEx還把各個版本的白金卡開卡獎勵給降低成80k了。
HT: 美卡論壇 YCJHUO。