iB.S.
People's fingers are various sizes - not sure how they'd pull off a comfortable iRing that would accommodate this.
Nothing about the combination of all these (iRing, 2nd Screen, TV) sound like a clean, simple way to watch TV. And the price point for a screen + mini screen wouldn't be as cheap as 1500. I imagine the TV alone wouldn't even be 1500.
Very little of this rumor talks about the white elephant in the room - CONTENT. How many of us really care about bells and whistles of the hardware at this point? How content is delivered is far more important.