Last week, Fitbit started to roll out the firmware version 27.32.4.19 to the Fitbit Ionic smart wearables. This update is based on Fitbit OS 2.0 and includes Fitbit Today, described as "an updated on-device dashboard that keeps you informed about all of your health and fitness data," support for Deezer playlists, a new set of control gestures, various changes to the interface, and more.
https://www.notebookcheck.net/Fitbit-OS-2-0-rolls-out-to-Fitbit-Ionic-wearables-with-Deezer-support-new-gestures-and-more.289866.0.html