‘Big Brother’ Gets Early Renewal for Summer 2013

"Big Brother," the long-running reality series, wraps its current season Wednesday

"Big Brother," the long-running CBS reality series, will be back for a 15th season, the network said Wednesday.

The series has received an early pickup for a Summer 2013 season.

The current season of the series, which premiered in 2000, wraps up with a 90-minute finale Wednesday.

The pickup isn't particularly surprising. A  reliable ratings-grabber for CBS, "Big Brother" has averaged 6.8 million total viewers, with a 2.5 rating in the adults 18-49 demographic that's most important to advertisers.