So far the only way you can enjoy the Android L Developer Preview is if you own either a Nexus 5 or a Nexus 7 (2013). All other devices have been left out in the cold. Today Google released Source code for Android L Developer Preview to AOSP for Nexus devices. This is more than likely so that OEMs will be able to begin to prepare for the release of Android L, but this also means that Rom developers will have what they need to be able to get this ported over to older Nexus devices that are not include, and also to other Android devices. Source is now available fro the Nexus 4, Nexus 5, Nexus 7 wifi, Nexus 7 Mobile Data, Nexus 7 (2013) wifi, and Nexus 7 (2013) Mobile Data.
Via Android