I was waiting for this! Now it's really a go! Sly confirmed Expendables 4 on his Instagram / facebook account. Check the article and video:
http://www.joblo.com/movie-news/sly...pendables-4-will-begin-shooting-this-year-275
http://www.joblo.com/movie-news/sly...pendables-4-will-begin-shooting-this-year-275