-Jamie Lloyd does not die at the beginning, but is rendered injured and is in a hospital until the Man in Black shoots her.While she is in the hospital and right before her death she has a flashback of a 'Thorn' ritual where Michael had to impregnate her.That last part is unofficial but there is a flashback of some sort.
-Michael follows a girl all the way to school.
-The last 20 minutes or so is completely different.The kidnapped people were taken tot hat hospital, but there is a ritual going on.Tommy manages to stop Michael and they escape.Dr. Loomis unmasks Michael,but it ain't Michael.Its Dr. Wynn(The Man in Black) and Michael is in the Man in Black costume.Dr. Loomis sees a thorn marking appearing on him and screams.