https://techcrunch.com/2018/06/04/the-new-gmail-will-roll-out-to-all-users-next-month/

Google today announced that the new version of Gmail will launch into general availability and become available to all G Suite users next month. The exact date remains up in the air but my guess is that it’ll be sooner than later.

The new Gmail offers features like message snoozing, attachment previews, a sidebar for both Google apps like Calendar and third-party services like Trello, offline support, confidential messages that self-destruct after a set time, and more. It’s also the only edition of Gmail that currently allows you to try out Smart Compose, which tries to complete your sentences for you.