The Sims 3, called the "Late Night Expansion." The add-on will include an "active downtown scene" where players can "become a local celebrity, member of a music band, mixologist, director, and more." You can also apparently become a vampire, but if the announcement trailer past the break is any indication, you'll just loiter around a lot of alleys. We imagine it's kinda like being a teenager ... forever.
The Sims 3: Late Night Expansion launches this fall.