Notable changes since RC1 include:

* Correcting a critical issue affecting GeoNetwork, search results, and layer
  detail pages.  Systems affected by this issue have invalid metadata in the
  Django database, so administrators upgrading pre-existing deployments should
  use the "django-admin.py updatelayers" tool to automatically correct the
  erroneous records.

* Correcting an issue with the default styles for uploaded raster layers, which
  prevented multi-band raster data from being rendered in GeoNode maps.

* Deployment documentation for Ubuntu and CentOS systems is now available in
  the release bundle, as well as online at http://docs.geonode.org/