The latest critical Java updates are now live in Self Service for all users. There are separate updates for 10.6 and 10.7/10.8 -- and users will only see the update appropriate for their operating system. Each update is on the Featured page in Self Service and visible right away. They have also been labeled Critical (refer to image below). The updates are set to run once per computer so after you install the update it will be removed from Self Service.