There is definitely going to be a second season. But they still haven't released the details yet. This is the latest:

CBS Rolls with Second 'Rock Star'

A second season of the summer series "Rock Star" is on its way to CBS, but the network hasn't decided which band will be searching for a new singer.
CBS Entertainment chief Nina Tassler confirmed Wednesday (Jan. 18) at the Television Critics Association midseason press tour that a second "Rock Star," produced by "Survivor" mastermind Mark Burnett, is in development for this summer. There's no word, yet, though, on the band that will follow the colon in the title, a la last year's "Rock Star: INXS."

Tassler says she's excited to bring the show back, noting that it "built a nice little buzz last summer." Although it wasn't a huge hit for CBS -- in fact, the "Real World"-style segments that formed part of the show were shipped to VH1 -- "Rock Star" slowly gained viewers over the course of its run, topping out at nearly 8 million viewers for its finale.

Tuesday performance episodes of the show averaged 6.3 million viewers, while results shows, which aired on Wednesdays, drew 5.4 million people per week. The series also did reasonably well among adults 18-49

J.D. Fortune, a 32-year-old singer from Canada, won the competition last summer and is currently on tour with INXS. The band's single "Pretty Vegas," released soon after the show's finale, debuted at No. 37 on the Billboard Hot 100 chart, marking the band's best opener ever.