Grant Martin

Delta just went public with the design of its premium economy product, which isn't too dissimilar from competitors' features. Expect to see Delta's in service in late 2017 with the A350.

Hyatt is experimenting with a revenue-based component to its loyalty program that only the airlines have so far implemented. How this turns out for hotel chain and its new World of Hyatt program may shape how the rest of the industry falls into step.

American's premium economy cabin becomes official on April 2 though its incorporation is raising as many questions as it is answers.

Iberia is just the latest in a host of carriers to launch a premium economy cabin, but the product looks like a big improvement over the main cabin.

Marriott and Starwood now allow members who use a co-branded credit card to earn bonus points when booking on the other carrier's hotels. It's a small perk, but it should be added incentive to booking within the network before wandering off to a third-party carrier.

Business class fares are becoming so reasonable that it often makes sense to book the tickets for the mileage bonuses. In many cases, elite status can be earned with one single flight.

Delta just opened up upgrades for some of its elite members traveling on award tickets. While a great perk for travelers, it also may be an indication of Delta's willingness to bury the hatchet with SkyMiles members.

American's got a new premium economy cabin that it's flying domestically for the next few months. Let's see if it turns into a viable product.

Delta's not-too-popular variable award pricing model is now being used to price out tickets on Virgin Atlantic. That may not bode well for the future of using SkyMiles within Delta's larger SkyTeam network.

United pushed the launch of its basic economy fares out a few months, giving business travelers a few more months to enjoy the full perks of budget tickets. Slowly, however, the axeman cometh.