New fifty shades

You're referring to the new book in the Fifty Shades series!

The latest installment in the series is "Fifty Shades of Grey: Book 4" (also known as "Fifty Shades: Freed"), which was published in 2017. This book concludes the trilogy and follows the story of Anastasia Steele and Christian Grey as they navigate their relationship and face new challenges.

However, it's worth noting that E.L. James, the author of the series, has also written several spin-off novels and companion books, including:

1. "Grey: Fifty Shades of Grey as Told by Christian" (2015) - a retelling of the first book from Christian's perspective.
2. "Darker: Fifty Shades Darker as Told by Christian" (2017) - a retelling of the second book from Christian's perspective.
3. "Fifty Shades of Grey: The Essential Guide" (2015) - a companion book that provides background information on the characters, settings, and themes of the series.

If you're looking for more Fifty Shades content, you might also enjoy the movie adaptations of the books, which were released in 2015 and 2017.