Moto 360 Sport
Motorola appears to be preparing to offer at least 2-3 different sizes of the Moto 360 smartwatch. Either two sizes for men and women, or those with smaller wrists, or the smaller size is simply going to be known as the Moto 360 Sport, and doesn't have the same metal design and lugs for watch straps. Instead it's made out of an allergy-free and more comfortable silicon rubber. This watch could have additional sensors on bottom, as we've seen from some leaked photos, to help track steps, calories, heart rate, and other sensors to make it a fitness-aimed wearable smartwatch.
The original Moto 360 did plenty of this, but in 2015 we're expecting more features, as well as a fully waterproof (not water-resistant) Moto 360 Sport to be revealed as well.