In November, Google and LG released the Nexus 5, the follow up to the Nexus 4. The device is powerful and cheap and it features 4G LTE data speeds. It will also likely be the only Nexus smartphone on the market for the next year or so.
Google typically releases one Nexus smartphone per year and so, unless it decides to abandon the Nexus series, 2014 will likely provide a new Nexus smartphone. For now, we'll call it the Nexus 6 as it will represent the sixth-generation Nexus smartphone.
There are no rumors out but consumers should expect it to feature powerful hardware with vanilla software and a cheap unlocked price tag. That seems like Google's magic formula and we don't expect it to stray far from what's working.