Google Messages introduces message scheduling, allowing users to send messages at a specific time. This feature is available on both Android and Web platforms. To schedule a message on Android, open the Google Messages app, compose your message, long press the send button, and select 'Schedule send' from the options. Choose the desired date and time, and tap 'Done' to confirm. On the Web, sign in to the Google Messages website, compose your message, click the clock icon next to the send button, choose the date and time, and click 'Schedule' to confirm.