Google announced on May 29th that “Gmail is getting a brand new inbox on desktop and mobile that puts you back in control using simple, easy organization.” That’s a bit of an overstatement, but Gmail’s new cateogories will make it easier for some users to organize their mail.
Gmail has long enabled users to organize their mail by using labels. With labels you can organize your messages into categories–work, family, to do, read later, jokes, whatever. Google claims that is better than the very similar idea of folders because you can assign multiple labels to a message.