The big changes at Southwest Airlines continue. The company has rolled out another pivotal step in its transformation, which executives argue will help improve performance. The company just announced when a major change to booking and boarding procedures will go into effect.

Dallas-based Southwest Airlines is on target to reach its financial goals after it reported higher-than-expected revenues from checked bags.

Going forward, even more changes are on the horizon. On Thursday, Southwest shared a revamp to its Rapid Rewards Credit Cards. Those adjustments involve new perks that are effective immediately, but come with a cost. Each of the five credit cards will have a spike in annual fees .

While Southwest’s profit and revenue fell, the airline noted that domestic leisure demand was starting to stabilize.