There’s a strange new kind of signup bonus offer, flagged by Uscreditcardguide. Instead of giving a finite signup bonus, this new kind of offer will tout a bonus of ‘up to xx points’. For example, I’m seeing (incognito) on this signup page an offer on the Amex Platinum for, “Up to 150,000 Membership Rewards® Points. Find out your welcome offer if you’re approved.” And a similar offer on the Amex Gold card for, “Up to 90,000 Membership Rewards® Points. Find out your welcome offer if you’re approved.”
After you submit your application and before you accept the Card (if you are approved), we will tell you the exact amount of Membership Rewards®Points which you are eligible to earn, which will be an amount up to 150,000 points. To qualify for such points, you must spend $8,000 (the “Threshold Amount”) or more in eligible purchases on your Platinum Card® from American Express within the first 6 months of Platinum Card® from American Express Card Membership starting from the date that your account is opened.
Note, most regular signup bonus pages still have the standard language, and this is only showing on special increased offer pages. In any case, worth keeping your eyes out for this.