A quick heads up for those of you who spend too much time in the air — or just enough to warrant having this app, anyway. Delta Air Lines has updated its aptly named Fly Delta app for Android 4.4 compatibility issues as well as some unnamed bugfixes. (Could be a placebo effect, but it almost seems a little faster, too.)
In addition, Detla's thrown in a small UI tweak — gone is the darker blue gradient, replaced by a different, flatter shade a blue. The legacy overflow menu button is still there, however — it'd be great to see that go. Otherwise, same old Delta app, though you can now use it from takeoff to landing.