Booboo wrote:Not being famil with the term rc, is this a finalised version and should I upgrade?
How long is a piece of string?
All the release announcements link to a page describing the type of release and yes, a release candidate is as close to a final release as you can get. There's a good chance 2.4.rc2 will be re-released as the final 2.4 release in early January.
Check the release notes for RC1 and RC2 to see if there's anything that affects you. If not, you can wait until the final 2.4 release, or you can help out with the testing effort and install 2.4.rc2.