evleaks suggest that the next Nexus will be from Motorola
PSA: that "Nexus 5" is probably the LG Optimus L9 II. Nexus 5 (Nexus 4 v2?) looks to be a Motorola handset.
Source from @evleaks I'll explain: Another rumor that has been floating around is that LG will be making a Nexus 5, that "Nexus 5" is probably the LG Optimus L9, in other words there is no Nexus from LG, the rumored "Nexus 5" is just another LG phone. The only Nexus (next gen Nexus 4) will be from Motorola.