Gmail is rolling out an update for Android users that includes notification previews, allowing users to see email titles and attachment previews in the notification panel. A unified Purchases Tab will be introduced to track online orders, featuring an "Arriving Soon" section for order and tracking details. The Promotions tab will be updated to provide timely notifications about personalized offers. Additionally, a one-tap appointment booking feature will be integrated with Google Calendar, enabling users to manage appointments directly within Gmail and allowing Workspace customers to add booking pages to email drafts easily.