Sentencing - As introduced, reduces the portion of a person's sentence for first degree murder that must be served prior to becoming eligible for parole to 60 percent of 60 years if sentenced to imprisonment for life for an offense committed during certain dates or 100 percent of 60 years if sentenced to imprisonment for life without the possibility of parole. - Amends TCA Title 39, Chapter 13, Part 2 and Section 40-35-501.