帮大家找了一些amex的个人卡的升级offer，后面如果有新高会不定期更新。
Disclaimer: 楼主只是偶然发现了这些链接，并未验证这些offer的有效性，也不知道能不能连升能否拿到奖励，使用这些offer的一切风险自负 
更新：根据坛友@wjcl668 提供的信息，已经有连升拿到奖励的dp：
Amex 白金升级offer：
125k/6k spend (POID K5SE:9987): https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/platinum-card/38160-WOCLOANS01
125k/6k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/platinum-card/38161-WOCLOANS01
100k/6k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/platinum-card/38130-WOCLOANS01
75k/6k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/platinum-card/38131-WOCLOANS01
Amex 金卡升级offer：
90k/2k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/gold-card/38162-WOCLOANS01
90k/2k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/gold-card/38163-WOCLOANS01
60k/2k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/gold-card/38132-WOCLOANS01
40k/2k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/gold-card/38138-WOCLOANS01
Amex BCP升级offer：
$150/1k spend: https://www.americanexpress.com/en-us/credit-cards/apply/upgrade/personal-card/blue-cash-preferred-credit-card/38132-WOCLOANS01
EDP的目前没看到，可能是暂时没有了。
副卡offer移步：
了zszs