Those who were waiting around for Apple's latest version of iTunes will not have to wait any longer. As of right now, Apple's iTunes 11 is currently available for download from Apple's website.
The new version of iTunes was originally set to debut in October, but then Apple announced that it had been delayed due to engineering problems. If you don't want to download a new copy of the software via the above link, you can also let your currently installed copy check for updates.
For Mac users, this means using Software Update, and Windows users can have iTunes "Check for Updates."