There's a new version of Org mode available. You can download it from here. The download page also has instructions for cloning the Git repository so that you can stay as up-to-date as you like.
The main changes appear to be with Babel processing. Some of these are incompatible so if you're a Babel user be sure to take a look. The changes page has an Elisp function to automate updating your old Babel buffers to the new syntax.
Concurrent with the new release, the Org team has also updated the site with a completely new look.