The official support period for Ubuntu 13.04 comes to an end later this month. From January 27 the Raring Ringtail will receive no further security updates, bug fixes or package upgrades.
For you bleeding edge Ubuntu Touch users, starting today daily images based on Raring are newly available from the Ubuntu QA isotracker. These are not (yet) the default images, but work is being done to iron out the kinks for it's transition.
The new contender for everyone's favourite tweak tool has been approved for inclusion in the official Raring repositories. So get out there and download it folks!