Yesterday, there are new leaked pictures about Android 5.0 Jelly Bean for Galaxy Nexus on XDA Developer forum. This OS is not released yet, this Android 5.0 for Galaxy Nexus is just for experiment and for developer only and not for daily usage.
In this developer version of Android 5.0 for Galaxy Nexus, there are many features that not supported yet such as Network, Wifi, Bluetooth, etc. Almost all of the features for daily usage support is not yet supported by this OS.
If you want to get this update of Android 5.0 Jelly Bean, it seems that you have to wait for a long time before it is updated. It’s not just because this OS still in a developer version and still in developing process, but also because the previous version of Android, Android 4.0 Ice Cream Sandwich is still very young and just a few devices that already use it.