On July 18th, the US Sentencing Commission voted to make the latest reductions in federal sentencing guidelines, which it approved in April, apply to people currently serving sentences in federal prison for drug crimes.
46,265 prisoners will be eligible to apply to have their sentences reduced. The average reduction will be about 25 months. Prisoners will begin to be released on November 1, 2015.
Read more about the sentence-reduction plan here.