'Big Brother' renewed for summer 2013

Again? Of course, again! CBS’ Big Brother is coming back next summer for another round of housemate craziness.

Big Brother has averaged 6.8 million viewers and a 2.5 in the adult demo this year, which is pretty good for a summer reality show these days — especially one that’s 12 years old. The 90-minute finale is airs tonight after the premiere of Survivor: Philippines (thus the timing of this CBS announcement).

Curiously, there’s been no word on whether ABC’s Glass House is coming back (ahem)…