Oracle released Enterprise Linux as part of "Oracle Unbreakable Linux" program. In fact Enterprise Linux is based on RedHat Enterprise Linux distribution. There are two versions to download x86 (32 bit) and x86_64 (64 bit) and download is free. The interesting fact is Oracle is also providing technical support to this distribution - Network, Basic and Premier support. Enterprise Linux could be downloaded at http://edelivery.oracle.com/linux. More informations about Enteprise Linux and Oracle Unbreakable Linux program you can find at: http://www.oracle.com/technology/tech/linux/. I'll try install it soon and post the first feelings here. Stay tuned! :-)

Update: You can read the response from Redhat aka "Unfakeable Linux" :-) http://www.redhat.com/promo/unfakeable/