So there are a couple rumors about LG. One is that LG might be tapped again to make the next Nexus. There is also another rumor that LG is going to put in it's own version of big.LITTLE Octa-Core chip in that phone.
Nexus 5 Rumors: Upcoming LG Smart Phone Powered with 8-Core Odin Processor? - International Business Times
LG Odin 8-Core Processor A Possibility | Ubergizmo
Nexus 5 Rumors: Upcoming LG Smart Phone Powered with 8-Core Odin Processor? - International Business Times
LG Odin 8-Core Processor A Possibility | Ubergizmo