Endless Quest was the name of the Pick-Your-Own Adventure Path game books that TSR published between 1982 and 1996. It was recently revived for the  D&D 5th Edition with a series of books by author Matt Forbeck.
"You never know, but we’ve stuck mostly to the Forgotten Realms so far. Ravenloft is our first venture outside that." says Matt Forbeck when asked about the possibility of an Isle of Dread tie in book. The question came up because a gigantic hardcover version of the Isle of Dread was released last year. It was published by Goodman Games under lisence, but the previous adventure in that series, Into the Borderlands, is advertised on Wizard's Website.

More Isle of Dread material from WotC would make fans of BECMI D&D and fans of Mystara happy. The setting has been teased in numerous D&D5E books, but Isle of Dread is the only book to fully embrace the setting.


See also: An old analysis of mine about the old Endless Quest Books and possible connections to Mystara (Piazza thread)



-Havard

I just saw this news over at the Piazza. Ravenloft will be the next D&D setting to be revived by Wizards of the Coast in 2011. According to poster Dragonhelm, the following was announced at GenCon:

"Ravenloft RPG announced! Characters can play all sorts of stuff that goes bump in the night - ghosts, vampires, etc"

If the focus is on playing undead characters, the 4E version of Ravenloft is going to be a bit different from the 2e version where the main point was not to become killed by the Undead. Of course, as I remember alot of people did use Undead PCs in their RL campaigns back then too.






-Havard