I guess you can say this is unofficially confirmed, and very exciting as well :)
https://www.kickstarter.com/projects/1252280491/myst-25th-anniversary-collection "
About
The Myst 25th Anniversary Collection
To celebrate the 25th Anniversary of the epic game that became your world, Cyan is offering a never-been-done-before, historical anthology of the complete series, along with some special, Atrus-approved, authentic game artifacts! The collection and artifacts will be packaged in a unique box - available only through this Kickstarter, with a limited run, for a limited time. (Seriously, the games will be available later, but the special packaging and artifacts will not be sold again!)
All 7 Myst Games Together for the First Time
Looking back on this incredible, 25-year journey, Cyan believes a celebration is in order! We recognize this amazing achievement could not have happened without each and every one of you who have found your way to this Kickstarter. You have embraced the intricacies, oddities and mysteries in the Myst worlds – and have come back for more. So, as 2018 marks the 25th anniversary of Myst, Cyan is taking our journey together one step further.
Behind the scenes, we’ve been working to procure the legal rights to make all of the Myst games available. As an indie developer, resources are limited for development, and acquiring these rights isn’t always an option. But we’ve finally managed to talk with all the right people in all the right places to garner funds to make it happen! With the needed agreements secured, we’re delighted to present the Myst 25th Anniversary Collection, featuring all seven titles in the Myst series!"
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"With the help of our friends at GOG.com, the games have been upgraded to run on Windows 10. This Kickstarter will provide the entire collection in a special exclusive package, but the updated versions of the games will also make their way to digital download services, starting with GOG.com, as automatic updates."
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...*throws money at his screen*