Always-on display mode support is a feature I would like to add to my clock faces. However, this feature is currently limited to select developers. Fitbit has been working with this select group of developers to improve their tooling and reviewing process before releasing the feature to more developers. I hope that Fitbit will release this feature to more developers soon.
Fitbit will be using the number of active users, downloads, and ratings of a third-party developer’s clock face as criteria in the release of the feature to more developers. To help, you may consider leaving a review of my clock face in the Fitbit app.