Cyan has bought publishing rights to Myst and we can expect updated versions of all the Myst games later this year it seems.
A bit more on the official Myst page.

Have my money pledged for the physical disks. Just 14 days left to get your money in if wanting extras beside just a digital download.

Just a word of warning, they have a cd check on the Obduction physical version (even though they said it would be DRM free). It won't let you run it without the disc in the drive, it won't even let you uninstall it without the disc.

And I don't see any mention about DRM on the Myst Kickstarter. If you care about that sort of thing, I'd strongly recommend asking them about it before the Kickstarter ends.