A little late posting this, but here is their preview of Showtime from an event earlier this month.

The Sims 3 In the Spotlight is a package that focuses on the Sims’ talent as a singer, magician, acrobat and DJ. All careers working in The Sims 3 Ambitions: you can join your Sim at work and help them to get to the highest level, which is 10 All careers include skills. If, for example, to get high in his career as a singer, you need skills in singing.
DJ is kind of half job. You work only as a DJ in the evening so you can have a regular job during the day, which means that you can earn extra cash!