Some airlines around the world let business and first class customers select a meal in advance from a variety of options, and then they’ll make sure to have it on board for you. Other airlines – including U.S. airlines – have been letting you choose mostly from what would otherwise be on board but choosing in advance ensures you receive your first choice.
Now that Delta has followed American Airlines offering to let you select in advance – and ensure your first choice of meal – from what they’re offering on board, it’s no surprise that United is rolling out their own test of this as well.