While Bluetooth organization filings aren't always the most reliable way to identify a particular upcoming device, we're fairly confident in a filing that was made yesterday for a certain piece of LG hardware: the LS980.
We're pretty sure this is a Sprint version of the Optimus G Pro. At least, everything we can tease out indicates as much - allow me to explain. First, "LS" is the device prefix LG uses for all of its Sprint phones (it probably stands for LG / Sprint), so this is really the most concrete detail we can edge out of the filing. How do we get to this being an Optimus G Pro, though?