It is a given that the Nexus 4 will be on the receiving end of the official Android update later down the road, but as for the developer preview of the upgraded operating system, it will only be made available on an official basis for folks who happen to be in possession of a Nexus 5 smartphone or the Nexus 7 (2013) tablet (Wi-Fi model).
Since Android L happens to be a developer preview, one ought to take note that this more often than not translates to the presence of several bugs as well as existing development. In fact, this particular package has been dubbed as the “initial version” for the Nexus 4, so as with most of the other unofficial releases, one ought to proceed at your own risk. Folks who gave it a whirl claim that the first boot will take up approximately 20 minutes of your time, so you have been forewarned.