FreeNAS 8.0.1 was released yesterday. The forum announcement containing the changes since RC2 is here.
The press release highlights some of the new features of 8.0.1.
The 8.0.1 User Guide has also been released. The links to the HTML, PDF, and ODT versions are available at doc.freenas.org. The front page of the documentation wiki has been reorganized to make it clear where the documentation is for .7x users, for the current release of the operating system, and for the development of the upcoming 8.1 documentation. The EPUB version should be available early next week and the Kindle version should show up in Amazon by Tuesday.
NOTE: If you are currently running a nightly, save your configuration and perform a new install as upgrades from nightlies are not supported. After installation, you can auto-import your volumes and restore your configuration.