The sequel to MYST III: Exile, this game follows the story of Atrus and continues the legend of the book whose ending has not yet been written. Revelation is equivalent to MYST IV, and is currently being developed by UbiSoft in Canada.
A news log and forum regarding the Myst IV game. Includes an audio and video library of released clips, along with several image galleries and a forum. http://www.mystobsession.com/
"Your sense of self-determination may falter at the end, but Myst 4 is still the best-laid and most challenging adventure game of the year." [Contains Myst spoilers] http://eblong.com/zarf/gamerev/myst4.html