TBH, its been a while since I;ve seen it but if the fourth one was in the pipeline then I don't see the point of trilogy boxsets. Planet of the Apes was meant to be a trilogy as but a fourth one is coming out as well. It puts out the consumers. This is one of the reasons I've stopped collecting boxsets for movies with multiple sequels/prequesls. Prefer the stand alone editions. I hate the way some companies keep milking the public like this.