Nu Image, one of the production companies behind the sequel, released an early synopsis on its official website recently. Take a look at the plot description below, which indicates that one of the Expendables is getting killed off.
"The Expendables are back and this time it's personal! After Tool (Mickey Rourke), the heart and soul of The Expendables, is brutally murdered on a mission, his comrades swear to avenge him. They're not the only ones who want blood. Tool's beautiful young and wild daughter Fiona embarks on her own revenge mission, complicating matters when she is captured and ransomed by a ruthless dictator plotting to destroy a resistance movement. Now Barney and The Expendables must risk everything to save her and humanity."
The Expendables 2 was released August 17th, 2012 and stars Sylvester Stallone, Jason Statham, Jet Li, Dolph Lundgren, Chuck Norris, Jean-Claude Van Damme, Bruce Willis, Arnold Schwarzenegger. The film is directed by Simon West.