Yes. But are you only noticing ARM? I wouldn't describe it as a return as they never left.
ARM processors are in EVERYTHING.
They are in 90% of the worlds phones and have been for decades. Half the worlds modems & routers. All USB 2.0 hard drives. Even in washing machines made in the last 10 years! Prolific is not the word to describe their success. You must have 10-20 or so ARM processors in your house.
Lots of set-top-boxes, HD-TV's and media players are all ARM based too.