Analog still has not left power supplies. The dynamics are just too fast for low-power digital. So the solution for a long time has been mixed analog and digital.
At higher power, there's usually a hierarchical control scheme with an all-digital supervisor at the top. Analog isn't required at that level because the dynamics are slower, and digital has the extra benefit of more control options that analog can't do.
As the dynamics get faster, there's an even greater need for analog. You start needing increasingly expensive op amps. But op amps trade speed for convenience. So the fix is even more analog, but the integrated type. At that point, you might as well throw in more digital features.
Which is why I think we'll just see even more mixed-signal options at the lowest levels. Different ways of leveraging analog speed and low power under an increasingly sophisticated digital manager.