If you run your website on Joomla you should go and take a look at the Joomla website for information about the release of Joomla 1.0.14. Looks like the release is mostly a security release to prevent cross site scripting attacks. More information can be found at the Joomla blog.
Don’t forget to backup your current Joomla site before upgrading, in case something goes wrong. On that note you might want to take a look at JoomlaPack. It is a backup component that will create a full backup of your site in a zip file. I have installed it on a Joomla test site and have been pleased with it so far. I am hoping to move it onto a production site later this week to try it out. It makes the backup process simple and easy to do.