Complex sentence: Shortly after Walker's death on November 30,2013, "Hours" which he had completed earlier in the year was released on December 13,2013 and another completed film "Brick Mansions", is set for release in May 2014.
Split into simpler sentences: Shortly after Walker's death, "Hours", which he had completed earlier in 2013, was released on December 13,2013. Another completed film, "Brick Mansions", is set for release in May 2014.