While we expect Google to feature Android N extensively during Google I/O, developers and intrepid enthusiasts now have the opportunity to try and get up close and personal with the latest, greatest new Android OS. Open for Nexus devices, the Android N preview images are easily installable directly on supported devices. If you have a Nexus 6P, Nexus 5X, Nexus 6, Nexus 9, Pixel C or a Nexus Player and are okay with potentially glitchy or unfinished software, you can go ahead and give the developer preview.
Source: Phandroid