Samsung willditch Tizenand replace it with Wear OS for the Galaxy Watch4 generation, according a constantly increasing pile of leaks and rumors. However, the change may be mostly on the inside – the Google software will reportedly be skinned with On UI 3.x, so the interface will appear similar to the current Galaxy Watches.
Samsung will also carry over the SmartThings features that current Watch owners are used to. There will be new features too, including a walkie-talkie function that will allow you to send short voice messages (Apple rolled out a similar feature with watchOS 5). The blood sugar sensor is probably not happening, though.
