Definitely interesting, and interesting they announced a change without a leaked set of changes (unlike Chase).

My best guess (based on zero information beyond the press release and the competition) is a new monthly Resy credit (likely $20), this is the same benefit they offer on the Delta Reserve card, and we know they want to promote dining and promote Resy since they own it. Also very likely they will follow the trend an offer an annual or bi-annual credit towards travel booked on their portal, this will probably replace the airline incidental credit and the FHR credit (maybe it's $250 bi-annually). Saks and Digital Entertainment credit likely eliminated, maybe one or two subscription based services are offered for free (maybe one that's currently in the digital credit bucket). Possibly a carrot for high spend like Delta silver status after $75k annual spend. Annual fee increases by $200 +/-. Decent chance they limit the 5x on airfare to their portal, maybe still offer 3x on airfare direct with airlines, they may also offer another multiplier category (perhaps dining). Maybe another popular GenZ subscription service like YouTube Premium, although Amex and Google don't seem to ever do anything together.

I can delete this is the mods don't want speculation without company rumors.