Around a month ago, Google announced that it planned to bring a dedicated Meet tab to its mobile clients. Now, iOS users are getting it first, and it will be widely available over the next couple of weeks. It will be "coming soon" to Android. Google also clarified that G Suite for Education accounts that can't create Meet video meetings will not see the Meet tab. They will need to use the dedicated Meet for Android or iOS client.
Source: 9to5Google