MONTPELIER, Vt.–(BUSINESS WIRE)–National Life Group announced that two new indexes and four new index crediting options are now available for its SummitLife Indexed Universal Life Insurance product that provides a death benefit of $1 million or more. The updated crediting options allow policyholders greater choice in how their policy value can potentially grow without being directly invested in the market. The new options – based on the performance of the Bloomberg Mavin 10 Index, Nasdaq 100