Well the next actual release will probably have more actual improvements instead of just doing light updates, but they don't want to release a Nexus phone with an update that is already out.
So they probably fixed a few small issues and made some tweaks just to call it 4.2 and will release it with the new Nexus phone so they can say it has the latest update. Considering the supposed fragmentation issue that Android OS seem to have, selling a phone and saying you have the absolute latest update could be a major selling point.
|