The Lost Boys never got a proper sequel in the 80s.
The Lost Boys was a landmark movie for its time.
And it will tie into the original movie, as The CW is owned by Warner Bros. You can purchase Lost in the Shadows: The Story of The Lost Boys where fine books are sold, with thanks to ComicBook.com for providing the excerpt.
No new Lost Boys movie is currently in the works, but The CW is working on a prequel series that falls inline with this post-credit scene.