American Express just added a new second bag free credit on the Delta cards, but at the same time they also introduced a new $120 rideshare credit. The credit varies somewhat by card, for example on the Gold cards the benefit is not active until you’ve paid your card renewal as the terms state:
Enrollment through American Express is required to receive this benefit and is available starting 12 months from the date the Card Account is opened.
On the Platinum & Reserve that language doesn’t seem to be present and the terms state:
Enrolled Basic Card Members can earn up to $10 in statement credits per month each year when the Basic Card or Additional Cards on the enrolled Eligible Card Account are used to make eligible purchases in the U.S. with the following rideshare services: Uber, Lyft, Curb, and Alto, which are subject to change. Eligible purchases can be made by both the enrolled Basic Card Member and any Additional Card Members on the enrolled Eligible Card Account. However, the total amount of statement credits for eligible purchases will not exceed $10 per month (for a total of $120) in statement credits per calendar year, per enrolled Eligible Card Account.
The credit is broken up into 12 $10 credits, one per month unfortunately. These cards currently have increased bonuses of up to 125,000 miles.
