I would like to think that the whole lot of it would be simply guesswork until an official statement is released by the folks over at Motorola concerning their third generation Moto X device. So far, other whispers of the upcoming Moto X (2015) would be powered by a Snapdragon SoC and accompanied by the likes of 3GB RAM as well as a Quad HD resolution display in order to keep up with the times.
Apparently, the older leaks have been said to be an old engineering sample of the upcoming device, and chances are pretty good that the final version of the Moto X (2015) will resemble what you see on the right a whole lot more. All in all, it is always wise to take whatever rumors that you read about with a pinch of salt.