Another new Tolkien book will be published in May next year - a compilation of all versions of Tolkien’s tale of Beren and Lúthien.http://www.tolkiensociety.org/2016/10/new-tolkien-book-beren-and-luthien/
Edited by Christopher Tolkien and illustrated by Alan Lee, Beren and Lúthien will bring together material scattered throughout the 12-volume History of Middle-earth series.
Beren and Lúthien will be published 100 years since Tolkien’s wife Edith danced for him in a small woodland glade filled with hemlocks in East Yorkshire, an event he later acknowledged was the inspiration for the meeting of the immortal Lúthien Tinúviel and the mortal Beren in the glades beside Esgalduin.
The story changed a lot from Tolkien's first concepts in 1917, until his son Christopher published what became the final version in The Silmarillion
in 1977. Tolkien even wrote a version as a poem, which he showed to his new friend C.S. Lewis in 1929 - Lewis absolutely loved it, not least for its mythical qualities.
I'm looking forward to this book - I wouldn't want to hunt through the 12 HoMe
volumes for the relevant sections, so having them all presented to me in one volume is great. And Alan Lee's illustrations will be good, too.
Aragorn and Arwen's love story in LotR in many ways parallell Beren and Lúthien's story - Aragorn even addresses Arwen as Tinuviel (another of Lúthien's names) the first time he meets her. (And they are both descended from the famous couple.)
As for my personal interest in Lúthien - my avatar is taken from a painting of a young Lúthien
by Henning Janssen
(with the artist's permission).