This could be the case, or could not be. They shared a post on Reddit 19 hours ago from their official account, and I thought it might be nice to share that here, at least to spark some discussion.
They simply shared a post titled:
Shall we? 📦💿
With the following image:

Link to the Reddit post is here if you want to see what others are saying about it!


Optical media? Maybe not.
Custom flash drives? That would be gravy.
Ugh, I would love a portable/offline launcher/installer for my GoG game files.
GOG already offers offline installers for all games they sell.
You do realize that flash drives are not near stable enough for long term storage, much less archival storage, right?
Not to take away form your point at all, but optical media degrades, too. Usually much slower, though. In the long run, regular transferal between backups is the only option. (In the long-long run, we will succeed in preserving nothing and all traces of our existence will be obscured! Ahhh!)
Yes, thats my point.
You have maybe a year, if you’re lucky, on a flash drive… and very few’d probably make it that far, and the ones that did would be egregiously expensive.
on optical media you have time that can be measured in decades, possibly even a century if proper storage practices are used.
That is a significant difference in stability