We have previously heard that the Gear S3 will get official in early September. At the same event we may even see the Galaxy Tab S3 tablets being introduced, since that’s also been rumored not long ago.
The Gear S3 should keep the round shape of its predecessor, as well as the rotary bezel. Furthermore, it might come with an altimeter, a barometer, and a GPS-based speedometer, thus enhancing upon the tracking abilities of the Gear S2. There will be a Classic version too, and both will run Tizen of course.