Mono-blue tempo and blue-red players will definitely take notice of Winged Words. It is currently the cheapest card draw spell if you control at least one creature with flying. As a result, it'll cost you only two mana, which is hard to beat.
The card being used now the most is Chart the Course, but it requires you to attack first if you don't want to discard a card. While Winged Words doesn't have that clause, which is why it will surely replace Chart as the main cantrip for blue tempo decks.