Amazing how, even from the Halls of Mandos, J.R.R. Tolkien continues to have books published.
Gondolin. Fairest city of the High Elves upon Middle-earth, a hidden
fastness against the implacable and uttermost evil of Morgoth who was
Sauron's master in the First Age. Ruled by Turgon, whose sword Glamdring
was found and wielded by Gandalf during the War of the Ring. Home of
Glorfindel, the Elf-lord who rescued Frodo from the Nazgul. Felled by
pride, jealousy, and treachery – the second to last of the great
tragedies that defined the War of the Jewels.
This is the story of Tuor son of Huor, the (Human) grandfather of Elrond. This is the story of The Fall of Gondolin, to be published August 30th this year. (A delightful event because, before, this tale was split between The Silmarillion and The Book of Unfinished Tales)