It seems like that Google might be winding up making Nexus 4, Nexus 7 and Nexus 10 customers out with its fresh upcoming version of Android OS. Google actually is going to halt the support for Nexus 4, 7 and 10 devices.
Although developers actually have access to the developer preview of Android M on the Nexus 5, Nexus 6 and Nexus 9, there is no such option accessible for the old devices in Google’s Nexus product range. Currently, whilst digging around in the code of the Android Open Source Project, outlines of the older Nexus devices were found, recommending that the standpoint could be making a beeline for the Nexus 4, 7 and 10.
The post, on Little Green Dude, points out that whilst the Nexus 4, 7 and 10 with Android M preview were labeled in the Android Open Source Project, it is not a a such claim to issue the new OS on those older devices.
The chances of Android M for the Nexus 4, 7 and 10 is not yet fully zero. Even though Google does not want to deliver it to those devices on its own,however, ROM makers will.