thanks joe, from your link:
Until Tuesday, the state's assertion was that Harris and his brother, Jason Harris, who also is charged with murder, came to the house to steal a computer and sexually assault Dillen’s sister, Justina. Some of the dropped charges included the sexual assault reference.
Others were different ways or theories to charge murder. However, many of the remaining counts are "felony" murder charges, which means that a person is guilty of murder regardless of whether they actually caused the death if the victims died during the commission of a forcible felony, armed robbery or home invasion in this case.
Also, some counts relating to Austin Gee are natural life eligible due to the child's age.