Here's the latest offering from Chase.
Looks like modest benefits, but no annual fee. This card is going after the leisure travel market. I don't think this will lure too many existing United cardholders to switch. With only 2% back on United purchase, 1.5% back on everything, the rewards are modest. Looks like no free checked bags or priority boarding either. On the plus side, no foreign transaction fees.
Looks like it might be an okay card, especially if you don't like paying an annual fee. Beyond that, there doesn't seem to be a huge upside.