Speculations point out that the Samsung Gear smartwatch might launch along the Galaxy Note III phablet on September 6th, and mentions the goal of this launch would be to precede the launch of a possible Apple iWatch.
We should point out that nothing substantial has leaked about the Samsung Gear watch. This could mean that the launch of the smartwatch would be low-key and it would be more of an accessory for Galaxy smartphones rather than a fully independent device.
In either case, September 6th should definitely be marked on your calendar.
source: Patently Apple