The mitzvah of Shemittas Kesafim comes into effect this year immediately before Rosh Hashanah. This law cancels all debts that someone is owed, meaning that the creditor cannot force collection.
The laws of Birkat Shehechiyanu, which comes first Shehechiyanu or the blessing on the food? reciting the Shehechiyanu on house renovations and on similar fruits, reciting the Shehechiyanu on a Mitzva, the first time lighting candles.
All of the books of the Prophets and the entire body of the Sacred Writings are to be annulled in the Messianic Age - with the exception of the Book of Ester. It, like the Five Books of Moses and the laws of the Oral Tradition, will never be annulled.