That 10% is a projection based in 2015 but 4K is becoming affordable so don't see why those projections will be far off but yeah we don't know yet. Secondly 4K media is growing, In some European countries and Japan are on their way to broadcast their media in 4K and Japan wants it before the 2020 Olympics. Their isn't a lot yet but streaming services give you the option to watch in 4K but their are not that many yet. I know breaking bad is one of them. Not 100% sure but thought Netflix wanted all their new series to have a 4K option.

In fact Forbes expect it to be higher than 10% 

New research and sales analysis out today has revealed that approximately one in every eight North American homes will own an Ultra HD/4K TV before the end of 2016.

According to a report by Strategy Analytics, this eye-catching figure – which equates to more than 11 million North American homes – is the result of rapidly falling prices for 4K TVs and increased availability that’s seen shipments of 4K TVs to the region this year surge by more than 70%.

I think I understand what he is saying but why not just have downsampling?

Seems possible. It will probably really take off once there's enough media that utilizes it to make people actually want 4k. Hopefully the prices continue to fall as well as, while the screens look fairly remarkable in the stores, I don't think the difference is as drastic (to the eye) as was that initial leap to HD to justify spending too much. I might be the minority in thinking that though.

I thought that would make sense.. you can't run 4K graphics if you don't have a 4K TV?

How on earth are so many of you misunderstanding what they're doing here?!

The original Xbox One will run Xbox One Games at 1080p resolution and below native (depending on the game) with up to 60 fps.
The Xbox One S will run Xbox One Games at 1080p native and 60 fps (read: not below).
The Xbox One Scorpio will run Xbox One Games at 4K (2160p) native and 60 fps (read: not below).

Spencer's statement about Scorpio not doing anything for you was in relation to the One S, NOT THE ORIGINAL. Meaning if you have a 1080p TV, the Scorpio won't have any advantage over the One S.

Cheezus, people...

So anyone who wants one has a year and a half to get money saved to buy one. Prices won't be the same as they are now either so what's the problem again? Is it because it's MS?

Game developers will be able to use Project Scorpio's 6 teraflops of GPU power in any way they wish, and won't be forced to hit a native 4K resolution, head of Xbox Phil Spencer suggested in a video posted earlier this week.

Speaking in the video (below), Spencer explained that Scorpio is a "6 teraflop gaming machine, which will be a great gaming machine for true 4K gaming, giving you a native 4K frame buffer so you can see games in all their beauty.

"Or," he continued, "if developers want to use those 6 teraflops in other ways they're free to do that."

Spencer's comments suggest that developers may be able to use Scorpio's additional power to deliver more visually impressive games at a lower resolution, rather than be forced to render at native 4K.

Source: http://www.videogamer.com/news/developers_can_use_scorpios_6_teraflops_however_they_wish_says_spencer.html

All dem back paddling

You really think a 6 Tflop system could run a AAA game at 4k/60fps? Eurogamer has trouble believing that it can run games at 4k/30...

My bad

Language barrier can kill sometimes. Lol!

If the games don't change, they can easily hit that number. After all, 4K only contains 4X more pixels than 1080p, whereas the Scorpio has an unspecified muscle aside from its 6 TFLOPS (5X more computing power).

However, if developers take advantage of additional features to add - like he suggested in his quote, "Or," he continued, "if developers want to use those 6 teraflops in other ways they're free to do that." - it'll likely be less than 60 fps. Depends on any extra 'horsepower features' that are included with the silicon.