If you're not already using Google Messages as your default text messaging app, this might finally get you to make the switch. Google is rolling out an update that adds the option to schedule when a message is sent. Scheduling messages is especially useful if you don't want to bother someone at the wrong time because they're in a different time zone, or you know they're busy at work. Or you can use it to schedule a message canceling plans that you regret even making.