I expect there will be a 4G version next year. In fact I really hope Google has plans to make Motorola become an amazing brand for affordable but highly specified devices that will crush all those that dare sell crappy budget phones that do nothing to the reputation of Android.
Even someone used to devices like the GS4, HTC One and Xperia Z1 can look at the Moto G as a decent device, as it punches way above its weight.