Just a moment ago I found a video on G+ that shows the Moto G third generation prototype in action!
System version: 23.36.4.osprey_retla_ds.retla.en.01 (Dual SIM - Retail Latin America)
Kernel version: 3.10.49 compiled on Thuesday, June 11, 2015
This model will arrive with Android 5.1.1 and will have the new Messages app from Motorola, and also has the Moto app, which allows you to use the phone with voice commands and Moto display!
The guy speaks in spanish and it seems to be from Mexico.
Totally legit! Hope to see official specs of this baby soon!!!
Also that model number and another two are listed as the last devices added to 4g networks in Brazil... Which means it has 4g out of the box.
And a guy sent me this photo!
If you want, tip this thread so it can be seen on the XDA portal! Cheers!