The telling sign comes in the form of the usual FCC sketching of where its insignia is supposed to go on the back of the device, complete with size and place schematics that tell us the dimensions of the new Samsung watch with model numbers SM-R500 and SM-R500X (perhaps for the eventual LTE version).
This could very well be the rumored new Sport timepiece that could actually land as a Galaxy Watch successor, judging from the imprint on the back of the FCC schematics, and what seem to be multiple heart rate and other sensors there. In fact, the internal codename of the device is said to be "Pulse," so we'd expect some series activity and health tracking options.
What's interesting to see on the leaked renders below, however, is that the signature toothed bezel seems to be gone. There could still be a rotating element for navigation around Samsung's Tizen OS, it could just be smoothed out in a new design take.
The FCC filing database also revealed another gem that could very well be the wireless charging pad for the phone, called "TX PAD for Pulse". The current Galaxy Watch charging pad is denoted with "TX Pad for Galileo" at the FCC, so make of it what you will.
In any case, the new and reportedly fitness-friendly Galaxy Watch entrant is nearing its release if the FCC stamp of approval is any indication, and we will likely know more about what's in store for us in about three weeks or so.