Ahhh…there will be a third Myst game. Presto is taking on the challenge of creating Myst III scheduled to ship early next year, while Cyan, the original developers (Rand Miller is still CEO there), works on “a state-of-the-art real-time 3D graphics engine to present the original Myst saga as it was originally intended”, scheduled for this year. (thanks for the tip BrainLog)