How many seasons bones will be?

I have hooked on bones since it is on air.So i want to know how many seasons it will be. 
Now it has comes out 7 seasons!On March 29, 2012, Fox renewed Bones for an eighth season. 
Bones DVD box set is based on forensic anthropology and forensic archaeology, with each episode focusing on an FBI case file concerning the mystery behind human remains brought by FBI Special Agent Seeley Booth to the forensic anthropologist Dr. Temperance “Bones” Brennan. The rest of the main cast includes Michaela Conlin, T. J. Thyne, Eric Millegan, Tamara Taylor, Jonathan Adams, and John Francis Daley. 

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SOURCE:dvdsetshop