The 7 PM Unlimited Night & Weekends plan addon that has been in certain test markets will be offered in all Corporate markets starting on November 10th. However, this option is only for people that have two-year contracts. You will be able to add it, but only if you change your plan to a two-year agreement.
Also, on November 10th any new add-a-phones added to a plan will have the first three months free. PCS-to-PCS will return to being free with a two-year agreement as well.