The new software for Samsung's smart wearables only brings minor changes but succeeds in improving the user's experience. The list of new features includes auto pause and indoor set exercises support (Gear Fit 2), as well as speedometer support for the Gear S3 (not confirmed yet).
http://www.notebookcheck.net/Samsung-Gear-Fit-2-and-Gear-S3-get-minor-software-updates.185527.0.html