Oh, the new DRM is coming out.
No "if's" about it.
They've spent 5 years carefully crafting it so it will check off all the right items on a buzzword bingo card.

They're not going to let all that effort go to waste.
And it will be used.
It might even succeed in driving Adobe out of the ePub DRM business.
It might take a decade or two but it could happen...